Climate Chat

Current Events: Are We Hitting the AMOC Tipping Point? with AMOC Scientist René van Westen

Dan Miller and Leon Simons, hosts — Thu, 16 Apr 2026 18:48:46 -0400

In this Climate Chat episode, we interview returning guest René van Westen on his latest Atlantic Meridional Overturning Circulation (AMOC) research, including his research that shows the recent sudden shift of the Gulf Stream is an indication of pending AMOC collapse. Dr. Westen is a postdoctoral researcher at Utrecht University in the Netherlands. René is the author of a number of recent scientific papers on AMOC including the following: Abrupt Gulf Stream path changes are a precursor to a collapse of the Atlantic Meridional Overturning Circulation: https://pmc.ncbi.nlm.nih.gov/articles/PMC12945690/ Substantial Risk of 21st Century AMOC Tipping even under Moderate Climate Change: https://arxiv.org/abs/2407.19909 Collapse of the Atlantic Meridional Overturning Circulation in a Strongly Eddying Ocean-Only Model https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GL114532 Deep Learning based reconstructions of the Atlantic Meridional Overturning Circulation confirm twenty-first century decline: https://iopscience.iop.org/article/10.1088/1748-9326/add7f0/meta Changing European Hydroclimate under a Collapsed AMOC in the Community Earth System Model (preprint): https://egusphere.copernicus.org/preprints/2025/egusphere-2025-1440/ View our previous Climate Chat interviews with Dr. Westen (highly recommended!): AMOC Collapse Research Update with René van Westen https://youtube.com/live/cBaRscaCBHU AMOC Collapse: Timing & Impacts, with Climate Scientist René van Westen https://youtube.com/live/xwcXF3TyWS8 René's home page: https://www.uu.nl/staff/RMvanWesten ----------------------------- Link to the Climate Chat Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql Link to the Climate Chat AMOC Collapse Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCofocBV9zwIX6DIsCGtYIzr Please Like and Subscribe! Listen to Climate Chat on Apple Podcasts: https://podcasts.apple.com/us/podcast/climate-chat/id1893162516 Listen to Climate Chat on Spotify: https://open.spotify.com/show/1m0OSLWRPPcyOddErvxJ1e Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Can We Reflect the Sun & Cool the Earth? with SRM Scientist Doug MacMartin

Dan Miller and Leon Simons, hosts — Mon, 13 Apr 2026 02:53:11 -0400

In this Climate Chat episode, Cornell climate scientist -- and returning guest -- Douglas MacMartin discusses the latest research in Sunlight Reflection Methods (a.k.a, solar radiation management (SRM) and Solar Geoengineering) and the practicality of implementing SRM in the coming decade, if needed. Douglas MacMartin is an Associate Professor in the Sibley School of Mechanical and Aerospace Engineering at Cornell University. His research focuses on Sunlight Reflection Methods (SRM, also known as climate engineering, or climate intervention), with the aim of helping to develop the knowledge base necessary to support informed future societal decisions in this challenging and controversial field. He has published extensively on the subject, and in addition to public and academic presentations has provided briefings to the UN Environment Program and testimony to the US Congress, and was a member of the US National Academies panel that made recommendations on both research and governance in March 2021. He received his Ph.D. in Aeronautics and Astronautics from MIT in 1992; previous positions include United Technologies Research Center (1994-2000) and the California Institute of Technology (2000-2015). His research is funded by NSF and by the Cornell Atkinson Center for a Sustainable Future. Dr. MacMartin's Cornell page: https://www.engineering.cornell.edu/people/douglas-macmartin/ Link to our 2025 interview with Dr. MacMartin: "Sunlight Reflection Methods Can Stop AMOC Collapse with Douglas MacMartin" https://youtube.com/live/lPnTQIXZnDc Link our 2024 interview with Dr. MacMartin: "Solar Geoengineering/Sunlight Reflection Methods: Safe, Effective, Needed? w/ Doug MacMartin": https://youtube.com/live/_JBLMsXNmhs Link to the Climate Chat Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql Link to the Climate Chat AMOC Collapse Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCofocBV9zwIX6DIsCGtYIzr Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Can We Reflect the Sun & Cool the Earth? with SRM Scientist Doug MacMartin

Dan Miller and Leon Simons, hosts — Mon, 13 Apr 2026 02:53:00 -0400

Douglas MacMartin is an Associate Professor in the Sibley School of Mechanical and Aerospace Engineering at Cornell University. His research focuses on Sunlight Reflection Methods (SRM, also known as climate engineering, or climate intervention), with the aim of helping to develop the knowledge base necessary to support informed future societal decisions in this challenging and controversial field. He has published extensively on the subject, and in addition to public and academic presentations has provided briefings to the UN Environment Program and testimony to the US Congress, and was a member of the US National Academies panel that made recommendations on both research and governance in March 2021. He received his Ph.D. in Aeronautics and Astronautics from MIT in 1992; previous positions include United Technologies Research Center (1994-2000) and the California Institute of Technology (2000-2015). His research is funded by NSF and by the Cornell Atkinson Center for a Sustainable Future.

Dr. MacMartin's Cornell page: https://www.engineering.cornell.edu/people/douglas-macmartin/

Link to our 2025 interview with Dr. MacMartin: "Sunlight Reflection Methods Can Stop AMOC Collapse with Douglas MacMartin" https://youtube.com/live/lPnTQIXZnDc

Link our 2024 interview with Dr. MacMartin: "Solar Geoengineering/Sunlight Reflection Methods: Safe, Effective, Needed? w/ Doug MacMartin": https://youtube.com/live/_JBLMsXNmhs

Link to the Climate Chat Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql

Link to the Climate Chat AMOC Collapse Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCofocBV9zwIX6DIsCGtYIzr

Please Like and Subscribe!

Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023.

Follow Dan Miller on X/Twitter: @danmiller999

Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social

Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons

Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬

Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home

Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social

Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social

You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it.

For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat

For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

The Iran War Climate Paradox Explained

Dan Miller and Leon Simons, hosts — Mon, 06 Apr 2026 02:02:54 -0400

In this Climate Chat episode, Host Dan Miller discusses the Iran war's positive and negative climate impacts, and explains why lower fossil fuel emissions caused by high oil prices due to the Iran war will not lower atmospheric CO2 levels nor reduce global warming. Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

3 Million Year Climate Secrets: What the Past Teaches Us

Dan Miller and Leon Simons, hosts — Mon, 30 Mar 2026 02:19:02 -0400

In this Climate Chat episode, Hosts Dan Miller and Leon Simons discuss recent research that measured the past 3 million years of greenhouse gases, and ocean heat content, and discuss what it means to our climate future. Link to research papers: "Broadly stable atmospheric CO2 and CH4 levels over the past 3 million years": https://www.nature.com/articles/s41586-025-10032-y "Global ocean heat content over the past 3 million years": https://www.nature.com/articles/s41586-026-10116-3 Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Seaforestation Can Reverse Climate Change with Brian von Herzen

Dan Miller and Leon Simons, hosts — Mon, 23 Mar 2026 02:32:55 -0400

In this Climate Chat episode, we interview Climate Foundation's Founder and Executive Director Brian von Herzen about the Climate Foundation's research of "seaforestation," which is a process that accelerates the growth of ocean kelp that results in (1) reducing greenhouse gas emissions, (2) sequesters atmospheric CO2, (3) increases reflective cloud coverage which results in lower global temperatures. Brian Von Herzen, Ph.D., is the founder and executive director of the Climate Foundation, which upholds the vision and the mission to regenerate life in the ocean using Marine Permaculture technology. As Executive Director, Brian leads Climate Foundation’s large-scale seaweed mariculture programs to develop sustainable food, feed and fertilizer value chains, provide ecosystem life support, and sustain blue carbon sinks. Brian graduated magna cum laude in three years from Princeton University with a degree in Physics. He holds a Ph.D. in planetary science from California Institute of Technology where he was awarded the prestigious Hertz Fellowship, and has been awarded numerous patents. After two decades developing system solutions for companies such as Intel, Disney, Pixar, Microsoft, HP, and Dolby, Brian launched the Climate Foundation in order to investigate groundbreaking nature-based solutions to the climate and other environmental challenges. Brian leads an international team of scientists, engineers, technicians, social scientists and seaweed farmers. Currently and most importantly, Brian is leading a successful Marine Permaculture seaforestation demonstration project in the Philippines. Climate Foundation website: https://www.climatefoundation.org Follow Climate Foundation on X/Twitter: @ClimateFdn Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Seaforestation Can Reverse Climate Change with Brian von Herzen

Dan Miller and Leon Simons, hosts — Mon, 23 Mar 2026 02:32:55 -0400

Business Ethics & Climate Change with Alison Taylor

Dan Miller and Leon Simons, hosts — Mon, 16 Mar 2026 02:27:01 -0400

In this Climate Chat episode, we interview the NYU professor and author Alison Taylor on business ethics and its impact on climate change (and vice versa). Alison Taylor joined New York University Stern School of business as a clinical associate professor in January 2023. Her research focuses on the organizational dimension of corporate responsibility and business ethics. She has expertise in strategy, sustainability, political and social risk, culture and behavior, human rights, ethics and compliance, stakeholder engagement, anti corruption and professional responsibility. Alison's first book, Higher Ground, was published by Harvard Business Review Press in February 2024. Her previous work experience includes being a Managing Director at non-profit business network Business for Social Responsibility and a Senior Managing Director at Control Risks. She holds several advisory roles, including with sustainability non-profit Business for Social Responsibility, VentureESG, Pictet Group and KKR. Alison is also a member of the World Economic Forum Global Future Council on Good Governance. Alison received her Bachelor of Arts in Modern History from Balliol College, Oxford University, her MA in International Relations from the University of Chicago, and MA in Organizational Psychology from Columbia University. Alison's NYU webpage: https://www.stern.nyu.edu/faculty/bio/alison-taylor Alison's personal website: https://www.alisontaylor.co Follow Alison on LinkedIn: https://www.linkedin.com/in/followalisont/ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

"Work on Climate" & Regenerative Economics with Eugene Kirpichov

Dan Miller and Leon Simons, hosts — Mon, 09 Mar 2026 02:23:18 -0400

In this Climate Chat episode, we interview the CEO of Work on Climate, Eugene Kirpichov, about the Work on Climate resource and its new focus on regenerative economics. Eugene Kirpichov is Co-founder and Executive Director of Work on Climate, a global community helping professionals take action on climate across industries and disciplines. Created to help people transition into climate-related careers, the organization is now evolving toward a deeper goal: empowering individuals to become climate leaders—people who transform their companies, sectors, and communities from within—guided by the vision of a regenerative economic system. Work on Climate homepage: https://workonclimate.org/ New focus on Regenerative Economics: https://workonclimate.org/2025/12/17/where-work-on-climate-is-headed/ Follow Eugene on LinkedIn: https://www.linkedin.com/in/eugenekirpichov/ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Why We “Choose to Fail” on Climate Action

Dan Miller and Leon Simons, hosts — Mon, 02 Mar 2026 02:46:40 -0500

In this Climate Chat episode, host Dan Miller discusses the reasons that humanity is failing to seriously address the existential climate crisis. While climate science clearly indicates that we must act urgently and dramatically, and cost-effective climate and energy solutions are available, we continue to "choose to fail." Related Climate Chat programs: Barriers to Climate Action: https://youtube.com/live/olcYG0LwJlw Optimism Bias & Climate Change: https://youtu.be/XYb1T2-RmlQ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

SRM Research: Science, Risk & Responsibility with Dakota Gruener

Dan Miller and Leon Simons, hosts — Mon, 23 Feb 2026 02:19:30 -0500

In this Climate Chat episode, host Dan Miller interviews the CEO of Reflective, Dakota Gruener, about her organization's support of Sunlight Reflection Methods (SRM, a.k.a., solar-geoengineering) research. Dakota Gruener leads Reflective, a non-profit climate initiative accelerating the pace of sunlight reflection research. Across a career spanning global health, digital privacy, and climate, Dakota has focused on developing frontier technologies with the potential for worldwide impact—while ensuring the risks they pose are addressed responsibly. Originally trained in biology and political science, she served as aide-de-camp to the CEO of Gavi, the Vaccine Alliance, where she supported negotiations with vaccine manufacturers and helped raise $10B to fund five years of vaccine programs in low- and middle-income countries. She was also founding Executive Director of ID2020, a global alliance committed to ethical, privacy-protecting digital identity and served as co-chair of both the WHO Smart Vaccine Certificate Working Group, which set international standards for COVID vaccination certificates, and the Good Health Pass Collaborative, a private-sector initiative (125+ companies) focused on resumption of international travel. Dakota holds a degree from Brown University and is a proud Californian. Link to Reflective: https://reflective.org Link to Dakota's op-ed in the Guardian: "We can safely experiment with reflecting sunlight away from Earth. Here’s how": https://www.theguardian.com/commentisfree/2026/jan/06/reflecting-sunlight-climate-crisis-heating Follow Dakota on LinkedIn: linkedin.com/in/dakotagruener Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

SRM Research: Science, Risk & Responsibility with Dakota Gruener

Dan Miller and Leon Simons, hosts — Mon, 23 Feb 2026 02:19:30 -0500

+2C by 2030s?!

Dan Miller and Leon Simons, hosts — Mon, 16 Feb 2026 02:53:19 -0500

In this Climate Chat episode, hosts Dan Miller and Leon Simons discuss the latest information on global temperature trends and predictions of reaching +2ºC in the 2030s. We will also discuss James Hansen's latest communications. James Hansen's latest communication: "Another El Nino Already? What Can We Learn from It?" https://mailchi.mp/caa/another-el-nino-already-what-can-we-learn-from-it?e=a29768a646 Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Risks of Termination Shock with Francisco Estrada

Dan Miller and Leon Simons, hosts — Mon, 09 Feb 2026 02:53:13 -0500

In this Climate Chat episode, we interview climate scientist Francisco Estrada about his recent paper assessing the risks of "Termination Shock" following the implementation of Solar Radiation Management (SRM, a.k.a., solar-geoengineering). Termination Shock is a rapid, severe warming spike that would occur if SRM were suddenly stopped, because accumulated greenhouse gases would heat the planet all at once instead of being masked. Francisco Estrada is a researcher at the Department of Environmental Economics, Institute for Environmental Studies (IVM), Vrije Universiteit Amsterdam. He also works in the Climate Change research group at the Center for Atmospheric Sciences of the Universidad Nacional Autónoma de México (UNAM). His PhD work centered on developing a new global Stochastic Integrated Assessment Model. He obtained a MSc on Risk Management from the Instituto Tecnológico Autónomo de México (ITAM). He was a contributing author for the Working Group II of the IPCC's Fourth Assessment Report and he has been selected as expert reviewer for the Working Group II contribution for the IPCC's Fifth Assessment Report. He has participated and coordinated research projects on the assessment of the potential impacts of climate change in agriculture, the economics of climate change and also on the generation of regional climate change scenarios. His recent paper is "Economic assessment of SRM under socio-political and geophysical tipping dynamics": https://iopscience.iop.org/article/10.1088/2752-5295/ae33df An article about the paper appeared in New Scientist magazine: "Termination shock could make the cost of climate damage even higher": https://www.newscientist.com/article/2513124-termination-shock-could-make-the-cost-of-climate-damage-even-higher/ Follow Francisco on X/Twitter: @festradaCCA Climate Chat SRM/Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Can SRM Prevent Tipping Points?

Dan Miller and Leon Simons, hosts — Mon, 02 Feb 2026 02:42:45 -0500

In this Climate Chat episode, host Dan Miller discusses SRM and its possible impact on various tipping points. Much of the information comes from the the following research paper: "The interaction of solar radiation modification with Earth system tipping elements" by Gideon Futerman, Mira Adhikari, Alistair Duffey, Yuanchao Fan, Jessica Gurevitch, Peter Irvine and Claudia Wieners: https://esd.copernicus.org/articles/16/939/2025/esd-16-939-2025.pdf Climate Chat SRM/Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Science vs. Economics on Climate Change

Dan Miller and Leon Simons, hosts — Mon, 26 Jan 2026 02:51:18 -0500

In this Climate Chat episode, host Dan Miller discusses how economic assessments of the risks of climate change differ greatly from scientific assessments. Related reports: Loading the DICE Against Pensions: https://carbontracker.org/reports/loading-the-dice-against-pensions/ Parasol Lost: Recovery plan needed - Global risk management for human prosperity: https://greenfuturessolutions.com/wp-content/uploads/2026/01/Parasol-Lost-Final.pdf Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Science vs. Economics on Climate Change

Dan Miller and Leon Simons, hosts — Mon, 26 Jan 2026 02:51:18 -0500

Optimism Bias & Climate Change

Dan Miller and Leon Simons, hosts — Sun, 18 Jan 2026 13:00:06 -0500

In this Climate Chat episode, host Dan Miller discusses optimism bias as it relates to climate change. Related reports and studies: Emphasizing urgency of climate change is insufficient to increase policy support: https://www.sciencedirect.com/science/article/pii/S2590332221001160 Cognitive Biases in Climate Risk Management https://www.braced.org/contentAsset/raw-data/533c48ab-749c-49e9-971b-3d0a83293256/attachmentFile The Psychology of Climate Change https://climatecommunications.earth/whitepaper-articles/the-psychology-of-climate-change/ Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Generations of Global Warming: A Dutch Perspective

Dan Miller and Leon Simons, hosts — Mon, 12 Jan 2026 03:16:44 -0500

In this Climate Chat episode, host Leon Simons discusses the impacts of global warming over generations of his Dutch family. Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Generations of Global Warming: A Dutch Perspective

Dan Miller and Leon Simons, hosts — Mon, 12 Jan 2026 03:16:44 -0500

2026 Climate Change Outlook

Dan Miller and Leon Simons, hosts — Mon, 05 Jan 2026 02:41:04 -0500

In this Climate Chat episode, hosts Leon Simons and Dan Miller discuss the state of climate change in 2026. Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Chat Year In Review 2025

Dan Miller and Leon Simons, hosts — Mon, 29 Dec 2025 02:42:47 -0500

In this Climate Chat episode, Host Dan Miller reviews the major climate stories of the year and gives a quick recap of the 2025 Climate Chat programs. Climate Chat programs are available here: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Chat Year In Review 2025

Dan Miller and Leon Simons, hosts — Mon, 29 Dec 2025 02:42:47 -0500

Why SRM/Solar-Geoengineering is Required (with Q&A)

Dan Miller and Leon Simons, hosts — Sun, 21 Dec 2025 16:15:01 -0500

In this Climate Chat Shorts episode, host Dan Miller presents why Solar Geo-engineering (a.k.a., Solar Radiation Management or SRM) is now required to avoid more than 2ºC of warming and catastrophe. To listen to the presentation along with follow-on Q&A (about 1 hour total), see this video: https://youtube.com/live/icb_op9_41I For more in-depth programs on SRM/Solar-Geoengineering, see the Climate Chat SRM/Solar-Geoengineering playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql For more detailed information on certain points made in this presentation, see the following Climate Chat programs: Solar-Geoengineering Can Stop AMOC Collapse with Douglas MacMartin https://youtube.com/live/lPnTQIXZnDc Solar-Geoengineering Can Reduce Overshoot & Emissions, with Peter Irvine https://youtube.com/live/NfCATLYm8c4 +3ºC by 2050?! https://youtube.com/live/TmZbwLC-kEw Happy Birthday Stacey!! Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Why SRM/Solar-Geoengineering is Required (with Q&A)

Dan Miller and Leon Simons, hosts — Sun, 21 Dec 2025 16:15:01 -0500

Ask Us Anything #2 with Dan Miller & Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 15 Dec 2025 03:11:40 -0500

In this Climate Chat episode, we answer listener questions posted on the YouTube Live chat, X/Twitter, and BlueSky. You can also forward questions ahead of the program to ClimateChatClub (at) gmail (dot) com. Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

California & Clean Energy with CEC Chair David Hochschild

Dan Miller and Leon Simons, hosts — Mon, 08 Dec 2025 02:41:50 -0500

In this Climate Chat episode, we interview the Chair of the California Energy Commission (CEC), David Hochschild, about the CEC's goal of moving California to 100% clean energy. David Hochschild was appointed chair of the California Energy Commission by Governor Gavin Newsom in February 2019. He fills the environmental position on the five-member Commission where four of the five members are required by law to have professional training in specific areas - engineering or physical science, environmental protection, economics, and law. Chair Hochschild's career has spanned public service, environmental advocacy, and the private sector. He first got involved in the solar energy field in 2001 in San Francisco as a special assistant to Mayor Willie Brown where Chair Hochschild launched a citywide $100 million initiative to put solar panels on public buildings. He also cofounded the Vote Solar Initiative, a 100,000-member advocacy organization promoting solar policies at the local, state, and federal levels. He was executive director of a national consortium of leading solar manufacturers and worked for five years at Solaria, a solar company in Silicon Valley. From 2007 to 2008, he served as a commissioner at the San Francisco Public Utilities Commission. For his work to advance clean energy, Chair Hochschild was awarded the Sierra Club's Trailblazer Award, the American Lung Association's Clean Air Hero Award, and the U.S. Department of Energy's Million Solar Roof True Champion Award. In 2024, he was named the American Energy Society’s Person of the Year: United States. Chair Hochschild holds a bachelor of arts from Swarthmore College and a master of public policy from the John F. Kennedy School of Government at Harvard University. He also was a Coro Fellow in Public Affairs. David's CEC page: https://www.energy.ca.gov/about/commissioners/david-hochschild Follow David on X/Twitter: @ChairHochschild Follow the CEC on X/Twitter: @CalEnergy Follow the CEC on Bluesky: @calenergy.bsky.social Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

California & Clean Energy with CEC Chair David Hochschild

Dan Miller and Leon Simons, hosts — Mon, 08 Dec 2025 02:41:50 -0500

COP30 & "The Plan" For Climate Action

Dan Miller and Leon Simons, hosts — Mon, 01 Dec 2025 02:14:21 -0500

In this Climate Chat episode, Climate Chat host Dan Miller discusses the UN COP30 (Conference of the Parties) in Belém, Brazil that recently concluded, and the current state of global plan for climate action. Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

COP30 & "The Plan" For Climate Action

Dan Miller and Leon Simons, hosts — Mon, 01 Dec 2025 02:14:21 -0500

3 Climate Truths Everyone Must Know

Dan Miller and Leon Simons, hosts — Mon, 24 Nov 2025 03:29:52 -0500

In this Climate Chat episode, Climate Chat hosts Dan Miller and Leon Simons discuss climate facts that everyone should (but don't) know regarding the amount of warming we can expect, the availability of solutions, and the opportunity to avoid the worst outcomes (that we are currently headed for). Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

'Doomsday Glacier' Update with Eric Rignot

Dan Miller and Leon Simons, hosts — Mon, 17 Nov 2025 02:27:49 -0500

In this Climate Chat episode, we interview glaciologist and climate scientist Eric Rignot about the Thwaites glacier in Antarctica (a.k.a., the Doomsday Glacier), the broader West Antarctic Ice Shelf (WAIS), Greenland, and their impact on sea level rise. Professor Rignot is a world-renowned glaciologist who studies the effects of global climate change on polar ice sheets. He uses satellites, airborne sensors, field data and numerical models to understand the dynamics of glacier ice along the coasts of the Antarctic and Greenland ice sheets as well as in Alaska and Patagonia. His research has documented major acceleration of ice loss as a result of climate change, and has been widely covered by The New York Times, Los Angeles Times, Washington Post, BBC, CNN, National Geographic and many others. In addition to his appointment at the University of California at Irvine, he is a Senior Research Scientist at NASA’s Jet Propulsion Laboratory (JPL) where he leads several NASA-funded projects. Eric's UCI page: https://ps.uci.edu/node/2110 Eric's JPL page: https://www.jpl.nasa.gov/site/research/rignot/ Eric's Google Scholar page (research listing): https://scholar.google.com/citations?hl=en&user=IEEkR3gAAAAJ&view_op=list_works&sortby=pubdate Follow Eric on Twitter/X: @erignot Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

What Politics Can & Can't Do for Climate with Jigar Shah

Dan Miller and Leon Simons, hosts — Mon, 10 Nov 2025 02:38:14 -0500

In this Climate Chat episode, we interview Jigar Shah about his experience running the Department of Energy's Loan Program Office during the Biden administration. Jigar Shah is a solar pioneer and clean energy entrepreneur with over 25 years of experience. He's known for founding SunEdison in 2003, which pioneered “no money down” solar and became the world's largest solar services company. He co-founded Generate Capital in 2014, an investment platform that finances sustainable infrastructure across various sectors. Shah has also held leadership roles at the Department of Energy and the Carbon War Room. From 2021 to 2025, Jigar ran the Department of Energy's Loan Program Office. Jigar's Wikipedia page: https://en.wikipedia.org/wiki/Jigar_Shah Follow Jigar on Bluesky: @jigarshahdc.bsky.social Follow Jigar on Twitter/X: @JigarShahDC Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

What Politics Can & Can't Do for Climate with Jigar Shah

Dan Miller and Leon Simons, hosts — Mon, 10 Nov 2025 02:38:14 -0500

Climate Politics When It's Too Late with Wim Carton

Dan Miller and Leon Simons, hosts — Mon, 03 Nov 2025 02:26:05 -0500

In this Climate Chat episode, we interview author and professor Wim Carton about his new book, co-authored with Andreas Malm, titled: "The Long Heat: Climate Politics When It's Too Late." The book focuses on climate adaption, negative emissions, and solar geoengineering and critiques them for being used as excuses to avoid rapid emissions reduction. Wim Carton is Associate Professor of Sustainability Science at Lund University, Sweden. He's the author of over 20 academic articles and book chapters on climate politics. His work has appeared in top journals such as Nature Climate Change, WIRES Climate Change and Antipode. Wim's Lund University page: https://www.lucsus.lu.se/wim-carton Link to the book: https://www.versobooks.com/products/3317-the-long-heat Follow Wim on Bluesky: @wimcarton.bsky.social Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Politics When It's Too Late with Wim Carton

Dan Miller and Leon Simons, hosts — Mon, 03 Nov 2025 02:26:05 -0500

Debunking the DoE Climate Denial Report with Andrew Dessler

Dan Miller and Leon Simons, hosts — Mon, 27 Oct 2025 02:34:11 -0400

In this Climate Chat episode, we interview climate scientist Andrew Dessler on his recent paper that debunks the "climate denial" report that was issued by the U.S. Department of Energy. Andrew Dessler is a climate scientist who studies both the science and politics of climate change. He is a Professor of Atmospheric Sciences and director of Texas A&M’s Texas Center for Climate Studies. His scientific research revolves around climate feedbacks, in particular how water vapor and clouds act to amplify warming from the carbon dioxide that humans emit. He is also interested in the intersection of climate change and human society, with the goal of helping us better cope with the impacts of climate change. This includes work quantifying climate extremes and how climate change can alter them, as well as analyzing how climate change will stress crucial energy, water, and other infrastructure and human systems. During the last year of the Clinton Administration, he served as a Senior Policy Analyst in the White House Office of Science and Technology Policy. Based on his research and policy experience, he has authored two books on climate change: The science and politics of global climate change: A guide to the debate (Cambridge University Press, 3rd ed. 2019, co-written with Edward Parson), and Introduction to modern climate change (Cambridge University Press, 3rd ed. 2021). This latter book won the 2014 American Meteorological Society Louis J. Battan Author's Award. Prior to his work on climate, his research focused on stratospheric photochemistry. He authored the book The chemistry and physics of stratospheric ozone (Academic Press, 2000) about his work on that subject. Link to DoE "A Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate" https://www.energy.gov/sites/default/files/2025-07/DOE_Critical_Review_of_Impacts_of_GHG_Emissions_on_the_US_Climate_July_2025.pdf Andrew Dessler & Robert Kopp's "Climate Experts’ Review of the DOE Climate Working Group Report" https://essopenarchive.org/users/260056/articles/1330312-climate-experts-review-of-the-doe-climate-working-group-report Andrew's Texas A&M page: https://artsci.tamu.edu/atmos-science/contact/profiles/andrew-dessler.html Andrew's personal website (with info on his books): https://www.andrewdessler.com Follow Andrew on X/Twitter: @AndrewDessler Follow Andrew on Bluesky: @andrewdessler.com Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Debunking the DoE Climate Denial Report with Andrew Dessler

Dan Miller and Leon Simons, hosts — Mon, 27 Oct 2025 02:34:11 -0400

Global Warming Acceleration, presentation by Leon Simons at the Global Heating Emergency Conference

Dan Miller and Leon Simons, hosts — Sun, 19 Oct 2025 13:00:06 -0400

In preparation for COP30, Leon gave this keynote presentation at the global online conference, "The Global Heating Emergency, Preventing 2°C by 2040: What’s the Plan?", which took place October 15-16. In this presentation Leon talks about the increased rate of global heating and how accelerated warming will lead to rapidly crossing risk levels that the world agreed to avoid in Paris 10 years ago. Other recordings of the will be available next week. For more, see: https://www.preventing2degrees.org/ Please Like and Subscribe!! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home

Global Warming Acceleration, presentation by Leon Simons at the Global Heating Emergency Conference

Dan Miller and Leon Simons, hosts — Sun, 19 Oct 2025 13:00:06 -0400

Northern/Southern Hemisphere Warming Asymmetry

Dan Miller and Leon Simons, hosts — Mon, 13 Oct 2025 02:38:25 -0400

In this Climate Chat episode, hosts Dan Miller and Leon Simons recent research on the asymmetry between warming in the Northern Hemisphere and South Hemisphere. PNAS paper: Emerging hemispheric asymmetry of Earth’s radiation: https://www.pnas.org/doi/10.1073/pnas.2511595122 And in Science: Observed trend in Earth energy imbalance may provide a constraint for low climate sensitivity models: https://www.science.org/doi/10.1126/science.adt0647 Links to Leon's upcoming presentations: https://www.preventing2degrees.org https://gezondetoekomst.org https://www.icari.eu Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Is "Carbon Farming" a Scam? with author Michael Grunwald

Dan Miller and Leon Simons, hosts — Mon, 06 Oct 2025 02:32:16 -0400

In this Climate Chat episode, We interview author Michael Grunwald about his new book, "We Are Eating the Earth": Humanity has cleared a land mass the size of Asia plus Europe to grow food, and our food system generates a third of our carbon emissions. By 2050, we’re going to need a lot more calories to fill nearly 10 billion bellies, but we can’t feed the world without frying it if we keep tearing down an acre of rainforest every six seconds. We are eating the earth, and the greatest challenge facing our species will be to slow our relentless expansion of farmland into nature. Even if we quit fossil fuels, we’ll keep hurtling towards climate chaos if we don’t solve our food and land problems. In this rollicking, shocking narrative, Grunwald shows how the world, after decades of ignoring the climate problem at the center of our plates, has pivoted to making it worse, embracing solutions that sound sustainable but could make it even harder to grow more food with less land. But he also tells the stories of the dynamic scientists and entrepreneurs pursuing real solutions, from a jungle-tough miracle crop called pongamia to genetically-edited cattle embryos, from Impossible Whoppers to a non-polluting pesticide that uses the technology behind the COVID vaccines to constipate beetles to death. It’s an often infuriating saga of lobbyists, politicians, and even the scientific establishment making terrible choices for humanity, but it’s also a hopeful account of the people figuring out what needs to be done—and trying to do it. Michael Grunwald, bestselling author of The Swamp and The New New Deal, builds his narrative around a brilliant, relentless, unforgettable food and land expert named Tim Searchinger. He chronicles Searchinger’s uphill battles against bad science and bad politics, both driven by the overwhelming influence of agricultural interests. And he illuminates a path that could save our planetary home for ourselves and future generations—through better policy, technology, and behavior, as well as a new land ethic recognizing that every acre matters. We Are Eating the Earth page on Simon & Schuster: https://www.simonandschuster.com/books/We-Are-Eating-the-Earth/Michael-Grunwald/9781982160074 Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

+3ºC by 2050?!

Dan Miller and Leon Simons, hosts — Sun, 28 Sep 2025 14:38:18 -0400

In this Climate Chat episode, Climate Chat hosts Dan Miller and Leon Simons discuss recent report from the German Meteorological Society and Physical Society that says that a warming of +3ºC (+5.4ºF) is possible by 2050. This is significantly more the IPCC and many other climate scientists say. As we will discuss, when it comes to existential threats, we must assume the worse and hope for the best. Report from the German Meteorological Society and Physical Society (in German, even though "English" is selected. They may update the website soon): https://www.dpg-physik.de/veroeffentlichungen/publikationen/stellungnahmen-der-dpg/klima-energie/klimaaufruf?set_language=en Leon Simons post on the report (in English): https://x.com/LeonSimons8/status/1971223899040842152 Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

+3ºC by 2050?!

Dan Miller and Leon Simons, hosts — Sun, 28 Sep 2025 14:38:18 -0400

'A Responsible Way to Cool the Planet'?!

Dan Miller and Leon Simons, hosts — Mon, 22 Sep 2025 10:02:08 -0400

Dan Miller and Leon Simons talk about New York Times Opinion article on Sunlight Reflection Methods (SRM) by Zeke Hausfath and David Keith. Humanity will be forced to make a balanced assessment of the risks of (intentionally) cooling vs not cooling the planet. More than what we do now. See yesterday's Climate Chat, where we talk about the aerosol termination shock of the sulphur air pollution that has already been mitigated over the past two decades. Notably from cleaning up shipping and coal-fired power plants: https://www.youtube.com/live/BNZ_biCaohE

'A Responsible Way to Cool the Planet'?!

Dan Miller and Leon Simons, hosts — Mon, 22 Sep 2025 10:02:08 -0400

What the Hell is Going On in the North Pacific?

Dan Miller and Leon Simons, hosts — Mon, 22 Sep 2025 02:55:05 -0400

In this Climate Chat episode, Climate Chat hosts Dan Miller and Leon Simons discuss recent temperature readings from the North Pacific Ocean and other areas. Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Carbon Capture for Pulp & Paper Mills with Brett Henkel

Dan Miller and Leon Simons, hosts — Mon, 15 Sep 2025 02:40:56 -0400

In this Climate Chat episode, we interview Svante co-founder and SVP, Brett Henkel, on Svante's carbon capture system and how it can it can produce negative carbon emissions when used to capture CO2 from pulp and paper mills. We will also discuss other applications for carbon capture including cement and steel plants, as well as direct air capture (DAC). As co-founder of Svante, Brett was instrumental in creating the process and the hardware used to prove the technology’s effectiveness as well as mobilizing external support throughout the path to becoming a successful innovation. These experiences strengthened his knowledge of business development and program management priorities. Prior to launching Svante, Mr. Henkel was the program manager for QuestAir Technologies’ compact hydrogen production system. He is credited with designing the world’s first solenoid-driven rapid pressure swing adsorption test station. Brett received his Bachelor of Science in Physics, with distinction, and a Mechanical Engineering degree from the University of Victoria. Brett on LinkedIn: linkedin.com/in/brett-henkel-0a93721 Follow Brett on X/Twitter: @bretthenkel Svante web site: http://Svanteinc.com Follow Svante on X/Twitter: @svantesolutions Follow Svante on YouTube: @svantesolutions Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

What SETI Tells Us About Climate Change on Earth with Bill Diamond

Dan Miller and Leon Simons, hosts — Mon, 08 Sep 2025 04:29:46 -0400

In this Climate Chat episode, we interview SETI (Search for Extraterrestrial Intelligence) Institute President & CEO Bill Diamond about what the search for extraterrestrial intelligence tells us about human-caused climate change on our home planet. Bill Diamond is a Silicon Valley technology veteran and current President and CEO of the SETI Institute in Mountain View, California. The SETI Institute is a nonprofit astrophysics and astrobiology research and education organization focused on the study of life in the Universe. Prior to joining the Institute, Mr. Diamond held various executive management positions in applied technologies, most recently at the optical networking company, Oclaro, Inc. Link to SETI site: https://www.seti.org Follow SET on X/Twitter: @SETIInstitute and Bluesky: ‪@setiinstitute.bsky.social‬ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Bill McKibben on The Power of Solar Power

Dan Miller and Leon Simons, hosts — Thu, 04 Sep 2025 01:38:08 -0400

In this Climate Chat episode, we interview author and activist Bill McKibben about his new book, "Here Comes the Sun." Bill McKibben is the founder of Third Act, which organizes people over the age of 60 for action on climate and justice, and of 350.org, the first global grassroots climate campaign. He’s written more than a dozen books, including The End of Nature, Deep Economy, and Falter, and has been a contributor to The New Yorker, The New York Review of Books, and Rolling Stone. He lives in the mountains of Vermont with his wife, writer Sue Halpern. ABOUT THE BOOK: From the acclaimed environmentalist, a call to harness the power of the sun and rewrite our scientific, economic, and political future. Our climate, and our democracy, are melting down. But Bill McKibben, one of the first to sound the alarm about the climate crisis, insists the moment is also full of possibility. Energy from the sun and wind is suddenly the cheapest power on the planet and growing faster than any energy source in history―if we can keep accelerating the pace, we have a change. Here Comes the Sun tells the story of the sudden spike in power from the sun and wind―and the desperate fight of the fossil fuel industry and their politicians to hold this new power at bay. From the everyday citizens who installed solar panels equal to a third of Pakistan’s electric grid in a year to the world’s sixth-largest economy―California―nearly halving its use of natural gas in the last two years, Bill McKibben traces the arrival of plentiful, inexpensive solar energy. And he shows how solar power is more than just a path out of the climate crisis: it is a chance to reorder the world on saner and more humane grounds. You can’t hoard solar energy or hold it in reserves―it’s available to all. There’s no guarantee we can make this change in time, but there is a hope―in McKibben’s eyes, our best hope for a new civilization: one that looks up to the sun, every day, as the star that fuels our world. Link to Bill's home page: https://billmckibben.com Buy the book: https://billmckibben.com/books/here-comes-the-sun/ Follow Bill on Bluesky: ‪@billmckibben.bsky.social‬ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Hansen: Venus Syndrome & Runaway Climate

Dan Miller and Leon Simons, hosts — Mon, 01 Sep 2025 02:41:45 -0400

In this Climate Chat episode, hosts Dan Miller and Leon Simons discuss climate scientist James Hansen's recent communications about the "Venus Syndrome" and runaway climate. Link to Hansen's recent communications: "Sophie's Planet: Chapter 10. The Venus Syndrome & Runaway Climate": https://www.columbia.edu/~jeh1/mailings/2025/VenusSyndrome.2025.08.27.pdf Link to our recent interview with James Hansen: "What Everyone Must Know About Climate Sensitivity with James Hansen": https://youtube.com/live/w5jShXBD6ck Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Debunking a Climate Denier: A Masterclass of Disinformation

Dan Miller and Leon Simons, hosts — Mon, 25 Aug 2025 02:49:27 -0400

In this Climate Chat episode, host Dan Miller goes step-by-step through a comment left on the Climate Chat interview with James Hansen that lays out 30 so-called "facts" about climate change that are, in reality, wrong, misleading, or irrelevant (or a combination of those three). The purpose of the exercise is to expose climate denier myths and discuss how climate disinformation is used to slow progress on climate action. Link to the interview with James Hansen: https://youtube.com/live/w5jShXBD6ck The specific comment is from @jholt03. Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

What Everyone Must Know About Climate Sensitivity with James Hansen

Dan Miller and Leon Simons, hosts — Sun, 17 Aug 2025 14:43:08 -0400

In this Climate Chat episode, renowned climate scientist James Hansen returns to Climate Chat to discuss Climate Sensitivity. Climate sensitivity relates to how much the Earth will warm in response "forcings" such as human-caused greenhouse gas (GHG) emissions. Such warming includes the direct warming in response to the forcing plus warming due to feedbacks to the direct warming. The total short-term "equilibrium" warming will play out over 100~1000 years. James Hansen and his co-authors (including Climate Chat host Leon Simmons) have said that the "Equilibrium Climate Sensitivity" (ECS) is 4.5ºC for a doubling of CO2, while the IPCC's best estimate is 3ºC. This difference is a "BFD" according to Dr. Hansen and, therefore, the climate sensitivity controversy is a major issue that will impact all humans (and other living things). Dr. James Hansen, formerly Director of the NASA Goddard Institute for Space Studies, is an Adjunct Professor at Columbia University’s Earth Institute, where he directs the Program on Climate Science, Awareness and Solutions. He was trained in physics and astronomy in the space science program of Dr. James Van Allen at the University of Iowa. His early research on the clouds of Venus helped identify their composition as sulfuric acid. Since the late 1970s, he has focused his research on Earth’s climate, especially human-made climate change. Dr. Hansen is best known for his testimony on climate change to congressional committees in the 1980s that helped raise broad awareness of the global warming issue. He was elected to the National Academy of Sciences in 1995 and was designated by Time Magazine in 2006 as one of the 100 most influential people on Earth. He has received numerous awards including the Carl-Gustaf Rossby and Roger Revelle Research Medals, the Sophie Prize and the Blue Planet Prize. Dr. Hansen is recognized for speaking truth to power, for identifying ineffectual policies as greenwash, and for outlining actions that the public must take to protect the future of young people and other life on our planet. Dr. Hansen's paper: "Global Warming in the Pipeline": https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Dr. Hansen's paper: "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?": https://www.tandfonline.com/doi/full/10.1080/00139157.2025.2434494 Dr. Hansen's recent communications on climate sensitivity: "Seeing the Forest for the Trees": https://www.columbia.edu/~jeh1/mailings/2025/ForestTrees.06August2025.pdf Dan Miller & James Hansen's white paper on Carbon Fee & Dividend: https://csas.earth.columbia.edu/sites/csas.earth.columbia.edu/files/content/Fee-and-Dividend-Miller-Hansen-20191110-1.pdf Dr. Hansen's webpage: https://www.columbia.edu/~jeh1/ Donate to the Columbia Climate Science, Awareness and Solutions Program: https://csas.earth.columbia.edu/giving Dr. Hansen's previous Climate Chat interview: Climate Change: What to Know/What to Do with Climate Scientist James Hansen https://youtube.com/live/8Ag3UVSrlhE Program on cloud feedbacks: Global Warming➔Fewer Clouds➔More Warming! with George Tselioudis: https://youtube.com/live/suFZb2ViHoA Climate Chat "Accelerated Warming" Playlist that includes many programs related to Dr. Hansen's work: https://www.youtube.com/playlist?list=PLep9tQgCqjCoEDD7jLXMFZnPL58eLQmZK Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

What Everyone Must Know About Climate Sensitivity with James Hansen

Dan Miller and Leon Simons, hosts — Sun, 17 Aug 2025 14:43:08 -0400

Climate Quotes & Memes

Dan Miller and Leon Simons, hosts — Mon, 11 Aug 2025 02:45:15 -0400

In this Climate Chat episode, Climate Chat hosts Dan Miller and Leon Simons discuss climate change related quotes and memes. Leave your favorite climate quotes and memes in the comments. Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Quotes & Memes

Dan Miller and Leon Simons, hosts — Mon, 11 Aug 2025 02:45:15 -0400

Ask Me Anything with Climate Chat Host Dan Miller

Dan Miller and Leon Simons, hosts — Mon, 04 Aug 2025 03:44:54 -0400

In this Climate Chat episode, Climate Chat host Dan Miller answers climate-related questions posted on YouTube, Twitter/X, and Bluesky. If you would like to view an interview and missed Thursday's discussion with former US Energy Secretary Steven Chu, follow this link: https://youtube.com/live/16hxH2dTB7o Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Change & Politics with Steven Chu

Dan Miller and Leon Simons, hosts — Fri, 01 Aug 2025 02:16:34 -0400

In this Climate Chat episode, we interview former U.S. Secretary of Energy and Nobel Laureate Steven Chu about the state and future of climate change, why political leaders have not addressed climate change seriously, and what can be done to increase action. Steven Chu is the William R. Kenan, Jr. Professor of Physics, of Molecular and Cellular Physiology, and of Energy Science and Engineering at Stanford University. He received an A.B. degree in mathematics and a B.S. degree in physics from the University of Rochester, and a Ph.D. in physics from the University of California, Berkeley. After a postdoctoral fellowship at Berkeley, he was at Bell Labs as a member of the technical staff in 1978 and then department head in 1983. From January 2009 to April, 2013, Dr. Chu served as U.S. Secretary of Energy under President Barack Obama. During his tenure, he began several initiatives, including ARPA-E (Advanced Research Projects Agency – Energy), the Energy Innovation Hubs, and the Clean Energy Ministerial meetings. As the first scientist Cabinet member, Chu recruited dozens outstanding scientists and engineers to the Department of Energy, and was personally tasked by President Obama to help stop the BP Oil leak. From 2004-2009, he was the director of the Lawrence Berkeley National Laboratory and Professor of Physics and of Molecular and Cell Biology at the University of California Berkeley. Prior to those positions, he was the Theodore and Francis Geballe Professor of Physics and Applied Physics at Stanford University. During this time, he helped start Bio-X, a multi-disciplinary initiative combining the physical and biological sciences with engineering and medicine. His contributions include the introduction of laser cooling and optical trapping of atoms and particles, atomic fountain clocks and atom interferometers, the optical tweezers of biomolecules, and single molecule FRET of biomolecules tethered to surfaces. His current research is in biophysics, molecular and cellular physiology, medical imaging, nanoparticle synthesis and battery research. He has received many awards, including the 1997 Nobel Prize for laser cooling and optical trapping of atoms. He is a member of the National Academy of Sciences, the American Philosophical Society, the American Academy of Arts and Sciences, National Academy of Inventors, and a foreign member of the Royal Society, the Royal Academy of Engineering, the Chinese Academy of Sciences, the Academia Sinica, the Korean Academy of Sciences and Technology and the Pontifical Academy of Sciences. He received an A.B. degree in mathematics, and a B.S. degree in physics from the University of Rochester, and a Ph.D. in physics from the University of California, Berkeley, and 35 honorary degrees. Dr. Chu's Stanford page: https://profiles.stanford.edu/steve-chu?tab=bio Please Like and Subscribe! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Acceleration of Global Warming and Climate Tipping Points with Peter Cox

Dan Miller and Leon Simons, hosts — Mon, 28 Jul 2025 02:43:08 -0400

In this Climate Chat episode, Leon Simons interviews University of Exeter climate scientist Peter Cox about the acceleration of global warming, climate tipping points, and other climate-related subjects. Professor Peter Cox is Professor of Climate System Dynamics in Mathematics and the Director of the Global Systems Institute at the University of Exeter. He has previously worked at the Met Office-Hadley Centre (1990-2004) and the UK Centre for Ecology and Hydrology (2004-2006). He is an international leader in the understanding of interactions between the land biosphere and climate change. He led the team that carried-out the first climate simulations to include the carbon cycle and vegetation as interactive components (Cox et al., 2000), which highlighted the possibility of Amazon Forest dieback under climate change (Cox et al., 2004). Professor Cox is a lead author on the 4th, 5th and 6th Assessment Reports of the Intergovernmental Panel on Climate Change and a member of the UK Government’s Defra Scientific Advisory Council. He has been named as a highly-cited author by Thomson-Reuters for every year from 2014 onwards and won an ERC Advanced Grant in 2017. Professor Cox has made outstanding contributions to research within the field of climate change. His work was central to the early development of the Met Office Hadley Centre, where he held several positions including Head of Climate, Chemistry and Ecosystems, and from 2006 he has been driving the development of world-leading climate research at the University of Exeter. Peter's University of Exeter page: https://experts.exeter.ac.uk/962-peter-cox Peter's Google Scholar page: https://scholar.google.com/citations?user=7S1cuNwAAAAJ&hl=en Follow Peter on Bluesky: @coxypm.bsky.social Please Like and Subscribe! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Human Fingerprint on Climate with Ben Santer

Dan Miller and Leon Simons, hosts — Mon, 21 Jul 2025 02:28:10 -0400

In this Climate Chat episode, we interview climate scientist Ben Santer about his lifelong work studying the human fingerprint on climate change. Ben Santer was a climate researcher at Lawrence Livermore National Laboratory and former researcher at the University of East Anglia's Climatic Research Unit. He retired from the Lawrence Livermore National Laboratory in 2021 and is now a Distinguished Scholar in Residence at Woods Hole Oceanographic Institution. He also worked at the Max Planck Institute for Meteorology from 1987 to 1992. Ben studies natural and human “fingerprints” in observed climate records. His early research contributed to the historic 1995 conclusion of the Intergovernmental Panel on Climate Change: “the balance of evidence suggests a discernible human influence on global climate.” He served as lead author of a key chapter of that report. Since 1995, Ben has identified human fingerprints in atmospheric temperature and water vapor, ocean heat content, sea surface temperature in hurricane formation regions, and many other climate variables. Ben holds a doctorate in Climatology from the University of East Anglia, England. After completing his Ph.D. in 1987, he spent five years at the Max-Planck Institute for Meteorology in Germany, where he worked on developing and applying climate fingerprint methods. Ben joined Lawrence Livermore in 1992. Ben's paper: "Human influence on climate detectable in the late 19th century": https://www.pnas.org/doi/10.1073/pnas.2500829122 Woods Hole article on Ben: https://www.whoi.edu/oceanus/feature/ben-santer-climate-fingerprinting-fowler-climate-crisis/ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Cause of Extreme North Atlantic Warming in 2023 with Matthew England

Dan Miller and Leon Simons, hosts — Fri, 18 Jul 2025 07:24:42 -0400

In this Climate Chat episode, we interview University of New South Wales climate scientist Matthew England on his recent Nature paper "Drivers of the extreme North Atlantic marine heatwave during 2023." We will also discuss Matthew's research on the Atlantic Meridional Overturning Circulation (AMOC) and changes in the Southern Ocean circulation and its impact on Antarctica. Matthew England is Australia’s leading ocean modeller and the world’s foremost authority on the modelling of the Southern Ocean. He was the first to successfully capture Antarctic water-masses in global climate models. England is also one of the world’s leading scientists in the modelling of deep ocean ventilation using tracers: he pioneered the use of geochemical and age tracers, and was the first to use CFCs to assess ocean model skill. England has also changed our view of the ocean’s role in regional climate variability and climate dynamics, with a particular focus on the Southern Hemisphere and climate over Australia. Link to Matt's recent Nature paper: Drivers of the extreme North Atlantic marine heatwave during 2023 https://www.nature.com/articles/s41586-025-08903-5 Link to "Abyssal ocean overturning slowdown and warming driven by Antarctic meltwater" paper (abstract and figures available in front of paywall): https://www.nature.com/articles/s41586-023-05762-w Link to "Interbasin and interhemispheric impacts of a collapsed Atlantic Overturning Circulation" (no paywall): https://www.researchgate.net/publication/361134395_Interbasin_and_interhemispheric_impacts_of_a_collapsed_Atlantic_Overturning_Circulation Matt's UNSW homepage: https://www.unsw.edu.au/staff/matthew-england Follow Professor England on X/Twitter: @ProfMattEngland Follow Professor England on Bluesky: @profmattengland.bsky.social‬ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Adaptation Investment with Sanjay Wagle

Dan Miller and Leon Simons, hosts — Mon, 14 Jul 2025 01:58:20 -0400

In this Climate Chat episode, we interview The Lightsmith Group co-founder and Managing Director Sanjay Wagle about his firm's focus on investing in climate adaptation and resilience opportunities. Sanjay Wagle is co-founder and Managing Director of The Lightsmith Group, a private equity firm investing in growth-stage technology companies that address critical societal needs, with a current focus on climate change adaptation and resilience. Sanjay is also a member of the board of the Woodwell Climate Research Center. Wagle’s experience includes 12 years investing in venture capital and growth equity. As a Principal at VantagePoint Capital Partners, he helped to launch the firm’s CleanTech Group, which invested over $1 billion in 25 cleantech companies—most notably, in the first institutional investment round in Tesla Motors. In the first three years of the Obama Administration, Wagle served as a senior official at the U.S. Department of Energy, overseeing the implementation of $15 billion of investments in clean energy under the American Recovery and Reinvestment Act. Wagle was part of the founding team for ARPA-E and served as the agency’s first Associate Director for Commercialization, launching ARPA-E’s “tech to market” program to commercialize breakthrough energy technologies. Earlier in his career, Wagle was an Investment Officer at the World Bank/International Finance Corporation, where he led equity investments in private transport, power, and water infrastructure projects in developing countries. Wagle holds a B.A. from Harvard University and an M.B.A. from the University of California at Berkeley. The Lightsmith Group website: https://lightsmithgp.com Sanjay on LinkedIn: https://www.linkedin.com/in/sanjaywagle/ Woodwell Climate Research Center: https://www.woodwellclimate.org Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Unintended Consequences of Reducing Fossil Fuel Emissions

Dan Miller and Leon Simons, hosts — Mon, 07 Jul 2025 02:50:31 -0400

In this Climate Chat episode, Climate Chat hosts Dan Miller and Leon Simons discuss the unintended consequences of reducing fossil fuel emissions and the problems of pursuing a "emissions reduction only" approach to addressing climate change. Leon Simons' 2023 LinkedIn post: "Unintended consequences of cleaning up our mess": https://www.linkedin.com/pulse/unintended-consequences-cleaning-up-our-mess-leon-simons/?trackingId=qavCmSFGQWiYHfM%2FV1t%2FhQ%3D%3Dhttps%3A%2F%2Fwww.linkedin.com%2Fpulse%2Funintended-consequences-cleaning-up-our-mess-leon-simons%2F%3FtrackingId Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Threatens Food Supplies Even With Adaption, with Andrew Hultgren

Dan Miller and Leon Simons, hosts — Mon, 30 Jun 2025 02:37:56 -0400

In this Climate Chat episode, We interview Andrew Hultgren about his recent paper in the journal Nature, "Impacts of climate change on global agriculture accounting for adaptation." The paper concludes that there will be significant drops in agriculture productivity under global warming even with adaption measures. Surprisingly, negative impacts are larger in developed countries with advanced agriculture practices. Andrew Hultgren is an environmental and Industrial Organization economist studying the economics of environmental regulation. His research interests include firm behavior under regulatory uncertainty and quantifying the economic impacts of climate change. Andrew is an assistant professor at the department of Agricultural and Consumer Economics at the University of Illinios Urbana-Champaign, a faculty affiliate at the National Center for Supercomputing Applications, and a member of the Climate Impact Lab. Research paper: Impacts of climate change on global agriculture accounting for adaptation: https://www.nature.com/articles/s41586-025-09085-w Andrew's personal website: https://www.andrewhultgren.com Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Threatens Food Supplies Even With Adaption, with Andrew Hultgren

Dan Miller and Leon Simons, hosts — Mon, 30 Jun 2025 02:37:56 -0400

Translating Climate to Human, with Ben Carey

Dan Miller and Leon Simons, hosts — Mon, 23 Jun 2025 02:24:02 -0400

In this Climate Chat episode, We interview Ben Carey, the co-founder of the Utopia Bureau, a climate communications lab, prototyping innovative ways to trigger climate action urgently and at scale. Its approach is to help tip social norms across multiple fronts. Its founders are Ben Carey and Henrik Delehag, authors and ex-advertising creative directors. They draw on a wide network of strategic, creative, production, media, and activist help depending on the project. Work so far has featured on the BBC, C4, CNN, Reuters, the FT, Politico, Fortune, Vice and others. Collaborators have included C4 / Keo Films, Extinction Rebellion, the Climate Emergency Fund, Climate2025, TruthTeller, GSCC. One of the projects of the Utopia Bureau is Climate Science Breakthrough that pairs real climate scientists with well-known comedians to "translate" climate messages to understandable messages. Link to Utopia Bureau: https://www.utopiabureau.com/ Link to Climate Science Breakthrough YouTube channel: https://www.youtube.com/@UCsBDVp9iAi0s1I5qeNZ9Bhg Follow Utopia Bureau on Bluesky: @utopiabureau.bsky.social‬ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Mati Carbon: Winner of $50M Carbon Removal Xprize, with CEO Shantanu Agarwal

Dan Miller and Leon Simons, hosts — Mon, 16 Jun 2025 02:29:58 -0400

In this Climate Chat episode, We interview Shantanu Agarwal, the CEO of Mati Carbon which was the Grand Prize winner of the Carbon Removal XPrize. Mati spreads crushed basalt rocks on farmer fields in the global south which improves soil quality and the crushed rock absorbs CO2 which earns carbon removal credits. Shanatanu Agarwal is an experienced climate tech serial entrepreneur with more than 20 years of industry experience. He has founded multiple successful startups and nonprofits in the energy and climate space. In 2021, he founded Mati Carbon, and brings a background in chemical engineering along with an MBA from Harvard. He has an in-depth understanding of the energy business and has dealt with a lot of oil companies, electric utilities and service companies along the way. Link to Mati website: https://www.mati.earth Link to Carbon Removal XPrize site: https://www.xprize.org/prizes/carbonremoval Follow Shantanu and Mati on X/Twitter: @shantanuagarwal and @mati_carbon Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Global Climate Change Indicators Update & What's Missing?

Dan Miller and Leon Simons, hosts — Mon, 09 Jun 2025 03:17:25 -0400

In this Climate Chat episode, Climate Chat hosts Dan Miller and Leon Simons discuss the upcoming report: "Indicators of Global Climate Change 2024: annual update of key indicators of the state of the climate system and human influence" which is in pre-print for the journal Earth System Science Data (ESSD). We will also discuss climate change indicators that are not included in the report. Link to pre-print: https://essd.copernicus.org/preprints/essd-2025-250/ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Public Perception of Climate Change & Climate Solutions with Kaitlin Raimi

Dan Miller and Leon Simons, hosts — Wed, 04 Jun 2025 02:32:30 -0400

In this Climate Chat episode, we interview University of Michigan Professor Kaitlin Raimi about her research on public perception of climate change and climate solutions such as carbon capture and sunlight reflection methods (SRM). Kaitlin Raimi is an associate professor of public policy at the University of Michigan Ford School. As a social/environmental psychologist, her interests center on how individuals can promote or prevent sustainable behaviors and policies. She has three broad areas of research: (1) how people compare their own beliefs and behaviors to others, (2) how adopting one pro-environmental behavior affects later action, and (3) how climate change communication affects people’s understanding, behaviors, and support for climate policies and technologies. Professor Raimi's web page: https://public.websites.umich.edu/~kraimi/ Selected research from Professor Raimi: Public perceptions of geoengineering https://www.sciencedirect.com/science/article/abs/pii/S2352250X21000385 How to encourage pro-environmental behaviors without crowding out public support for climate policies https://behavioralpolicy.org/wp-content/uploads/2022/03/BSP_Vol7Issue2_Raimi.pdf Meta-analysis of pro-environmental behaviour spillover https://www.nature.com/articles/s41893-019-0263-9 The Aversion to Tampering with Nature (ATN) Scale: Individual Differences in (Dis)comfort with Altering the Natural World https://pubmed.ncbi.nlm.nih.gov/31613025/ Belief superiority in the environmental domain: Attitude extremity and reactions to fracking https://www.sciencedirect.com/science/article/abs/pii/S0272494414000474 Effects of communicating the rise of climate migration on public perceptions of climate change and migration https://www.sciencedirect.com/science/article/abs/pii/S027249442300258X Models and scenarios for solar radiation modification need to include human perceptions of risk https://iopscience.iop.org/article/10.1088/2752-5295/addd42/meta Follow Kaitlin on Bluesky: ‪@kaitlinraimi.bsky.social‬ Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Public Perception of Climate Change & Climate Solutions with Kaitlin Raimi

Dan Miller and Leon Simons, hosts — Wed, 04 Jun 2025 02:32:30 -0400

Ask Us Anything with Dan Miller & Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 02 Jun 2025 03:16:21 -0400

In this Climate Chat episode, we answer viewer questions. Please post your questions ahead of the live program on X/Twitter or Bluesky. During the livestream, you can post questions via the YouTube comments (please preface your question with "Question:"). Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

AMOC Collapse Research Update with René van Westen

Dan Miller and Leon Simons, hosts — Mon, 26 May 2025 02:26:24 -0400

In this Climate Chat episode, we interview returning guest René van Westen on his latest Atlantic Meridional Overturning Circulation (AMOC) research. Dr. Westen is a postdoctoral researcher at Utrecht University in the Netherlands. René is the author of a number of recent scientific papers on AMOC including the following: Substantial Risk of 21st Century AMOC Tipping even under Moderate Climate Change: https://arxiv.org/abs/2407.19909 Collapse of the Atlantic Meridional Overturning Circulation in a Strongly Eddying Ocean-Only Model https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GL114532 Deep Learning based reconstructions of the Atlantic Meridional Overturning Circulation confirm twenty-first century decline: https://iopscience.iop.org/article/10.1088/1748-9326/add7f0/meta Changing European Hydroclimate under a Collapsed AMOC in the Community Earth System Model (preprint): https://egusphere.copernicus.org/preprints/2025/egusphere-2025-1440/ View our previous Climate Chat interview with Dr. Westen (highly recommended!): AMOC Collapse: Timing & Impacts, with Climate Scientist René van Westen https://youtube.com/live/xwcXF3TyWS8 René's home page: https://www.uu.nl/staff/RMvanWesten ----------------------------- Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

When Will We Go Over 2ºC? & Hansen's Cloud Update

Dan Miller and Leon Simons, hosts — Mon, 19 May 2025 02:47:53 -0400

In this Climate Chat episode, hosts Dan Miller & Leon Simons discuss warming trends and what they say about when the Earth will cross the 2ºC warming threshold. We will also discuss the latest communications from climate scientist James Hansen on cloud feedbacks and what that means for near-term global warming. Link to James Hansen's communication: "Large Cloud Feedback Confirms High Climate Sensitivity": https://www.columbia.edu/~jeh1/mailings/2025/CloudFeedback.13May2025.pdf Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Why Climate Policies Fail

Dan Miller and Leon Simons, hosts — Mon, 12 May 2025 02:47:49 -0400

In this Climate Chat episode, Dan Miller presents the second half of a lecture he gave recently at the Middlebury Institute of International Studies in Monterey. This talk is on why climate policies fail and highlights the mistakes made when developing climate policies and ends with a set of policies that would seriously address the climate crisis. Please Like and Subscribe! Link to first half of the lecture: Climate Science Update (abridged): https://youtu.be/W0Maq2HeJSI Related Climate Chat programs: 20-Point Global Policy Plan to Address Climate Change https://youtube.com/live/p2496OB1EmI Barriers to Climate Action https://youtube.com/live/olcYG0LwJlw Jevons Paradox & the Rebound Effect with Leon Simons https://youtube.com/live/hv5fwP_3L2Y AI Energy Efficiency Will Increase AI Energy Usage! https://youtube.com/live/Lwn8kZv1ioY Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social ------------------------- Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social You can leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

European Geosciences Union 2025: "Disneyland for Earth Scientists," with Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 05 May 2025 02:46:22 -0400

In this Climate Chat episode, Leon Simons reports on the European Geosciences Union (EGU) 2025 General Assembly meeting that ended Friday. Please Like and Subscribe! Link to EGU 2025 website: https://www.egu25.eu Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home ---------------- Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

European Geosciences Union 2025: "Disneyland for Earth Scientists," with Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 05 May 2025 02:46:22 -0400

Sunlight Reflection Methods Can Reduce Overshoot & Emissions, with Peter Irvine

Dan Miller and Leon Simons, hosts — Mon, 28 Apr 2025 02:18:43 -0400

In this Climate Chat episode, climate scientist Peter Irvine discusses a research paper he co-authored that says solar-geoengineering (a.k.a, solar radiation management or sunlight reflection methods - SRM) can limit temperature overshoot while reducing greenhouse gas emissions and shortening the time it takes to get back to a safe temperature. Link to the paper: "Peak Shaving with Solar Radiation Modification Would Shorten Global Temperature Overshoot": https://academic.oup.com/oocc/advance-article/doi/10.1093/oxfclm/kgaf013/8107970 Dr. Irvine's research focuses on solar geoengineering, a proposal to directly alter the Earth’s energy budget to offset the warming effect of greenhouse gases. He works with climate and Earth system models to understand the potential impacts of climate change and solar geoengineering, and he collaborates with researchers from a range of disciplines to explore the broader implications of solar geoengineering. He is also is the editorial director of SRM360, a non-profit organization that supports an informed, evidence-based discussion of sunlight reflection methods (SRM) by synthesizing, explaining, and communicating the science in a clear and accessible way. Dr. Irvine previously worked at University College London as an assistant professor, at Harvard and the Institute for Advanced Sustainability Studies as a post-doc, and he earned his PhD at the University of Bristol. Dr. Irvine's University of Chicago page: https://geosci.uchicago.edu/people/peter-irvine/ SRM360: https://www.srm360.org/ Pete's Climate Reflections podcast: https://srm360.org/podcast/introduction-to-climate-reflections/ Sign up for the SRM360 newsletter: https://SRM360.org/subscribe Follow Pete on X/Twitter: @peteirvine and Bluesky: @peteirvine.bsky.social Link to the Climate Chat Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql ---------------- Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and moved to YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Sunlight Reflection Methods Can Stop AMOC Collapse with Douglas MacMartin

Dan Miller and Leon Simons, hosts — Mon, 21 Apr 2025 02:24:51 -0400

In this Climate Chat episode, Cornell climate scientist -- and returning guest -- Douglas MacMartin discusses a research paper he co-authored that says Sunlight Reflection Methods (a.k.a, solar radiation management - SRM) can stop the weakening of the Atlantic Meridional Overturning Circulation (AMOC), which is the ocean "conveyor belt" that transports warm water from the tropics to northern Europe. Link to pre-print paper: "Stratospheric Aerosol Injection could prevent future Atlantic Meridional Overturning Circulation decline, but injection location is key": https://essopenarchive.org/users/624026/articles/1253358-stratospheric-aerosol-injection-could-prevent-future-atlantic-meridional-overturning-circulation-decline-but-injection-location-is-key Douglas MacMartin is an Associate Professor in the Sibley School of Mechanical and Aerospace Engineering at Cornell University. His research focuses on Sunlight Reflection Methods (SRM, also known as climate engineering, or climate intervention), with the aim of helping to develop the knowledge base necessary to support informed future societal decisions in this challenging and controversial field. He has published extensively on the subject, and in addition to public and academic presentations has provided briefings to the UN Environment Program and testimony to the US Congress, and was a member of the US National Academies panel that made recommendations on both research and governance in March 2021. He received his Ph.D. in Aeronautics and Astronautics from MIT in 1992; previous positions include United Technologies Research Center (1994-2000) and the California Institute of Technology (2000-2015). His research is funded by NSF and by the Cornell Atkinson Center for a Sustainable Future. Dr. MacMartin's Cornell page: https://www.engineering.cornell.edu/people/douglas-macmartin/ Link to last year's Climate Chat interview with Dr. MacMartin: "Solar Geoengineering/Sunlight Reflection Methods: Safe, Effective, Needed? w/ Doug MacMartin": https://youtube.com/live/_JBLMsXNmhs Link to the Climate Chat Solar-Geoengineering Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCoWPp-16Oxhjt9QPvtynzql Link to the Climate Chat AMOC Collapse Playlist: https://www.youtube.com/playlist?list=PLep9tQgCqjCofocBV9zwIX6DIsCGtYIzr ---------------- Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and moved to YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Science Update with Dan Miller (Abridged)

Dan Miller and Leon Simons, hosts — Wed, 16 Apr 2025 22:00:23 -0400

In this Climate Chat episode, Dan Miller presents an update on the latest climate science, with an emphasis on the recent research from climate scientist James Hansen as well as NASA scientist George Tselioudis. This presentation is based on a lecture that Dan gave recently at the Middlebury Institute of International Studies at Monterey. Note: This abridged version does not include Q&A at the end. See the unabridged version if you want to hear the Q&A: https://youtube.com/live/MYUuzNkXxYE Related links: James Hansen's "The Acid Test: Global Temperature in 2025" communication: https://www.columbia.edu/~jeh1/mailings/2025/Acid.Test.20Feb2025.pdf Dr. Hansen's recent paper "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?": https://www.tandfonline.com/doi/full/10.1080/00139157.2025.2434494 James Hansen, Leon Simons, et al: "Global Warming in the Pipeline" paper: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Dr. Hansen's 2016 paper: "Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 °C global warming could be dangerous": https://acp.copernicus.org/articles/16/3761/2016/ Dr. Hansen's home page: http://www.columbia.edu/~jeh1/ Global Warming➔Fewer Clouds➔More Warming! with George Tselioudis https://youtube.com/live/suFZb2ViHoA ---------------- Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Science Update with Dan Miller (Abridged)

Dan Miller and Leon Simons, hosts — Wed, 16 Apr 2025 22:00:23 -0400

Can We Save Ourselves? with Dana Fisher

Dan Miller and Leon Simons, hosts — Mon, 07 Apr 2025 02:31:38 -0400

In this Climate Chat episode, we talk with Dana Fisher, author of "Saving Ourselves: From Climate Shocks to Climate Action," about what it will take to get the public to demand climate action and get policymakers to listen to them. Dana R. Fisher is the Director of the Center for Environment, Community, & Equity and Professor in the School of International Service at American University. She currently serves as a Non Resident Senior Fellow in the Governance Program at the Brookings Institution, and the chair of the Political Sociology Section of the American Sociological Association. Her research focuses on questions related to democracy, civic engagement, activism, and climate politics. Current projects include studying political elites’ responses to climate change, the ways national service corps programs in the US are expanding their work on disaster response, recovery, and resilience, and on-ramps to activism and political engagement. Her research employs a mixed-methods approach that integrates data collected through open-ended semi-structured interviews and participant observation with various forms of survey data. Professor Fisher has presented her work to the US National Academies of Science, Engineering, and Medicine, federal agencies, foundations, presidential campaigns, and other political organizations. She served as a Contributing Author for Working Group 3 of the Intergovernmental Panel on Climate Change’s Sixth Assessment Review (IPCC AR6) writing about citizen engagement and civic activism. Fisher received her Ph.D. and Master of Science degrees from the Department of Sociology at the University of Wisconsin-Madison. Her undergraduate degree is in East Asian Studies and Environmental Studies from Princeton University. Dana's web site: https://danarfisher.com Buy Dana's book, "Saving Ourselves": https://danarfisher.com/pre-order-book/ Watch Dana's TED talk: https://go.ted.com/danarfisher Follow Dana on Bluesky: @fisherdanar.bsky.social ---------------- Please Like and Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

CO2 Accounting Scam? with Dan Miller & Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 31 Mar 2025 02:29:50 -0400

In this Climate Chat episode, Leon Simons and Dan Miller will discuss how the IPCC treats CO2 and aerosol emissions differently and how that leads to an underestimation of climate impacts. Link to posts on this subject: https://bsky.app/profile/leonsimons.bsky.social/post/3lljyjnclts2a https://x.com/ryankatzrosene/status/1905326300363194478 Many other Climate Chat programs on accelerated warming, AMOC collapse, SRM, etc.: https://www.youtube.com/@climatechat/streams Please Like and Subscribe! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home ---------------- Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

CO2 Accounting Scam? with Dan Miller & Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 31 Mar 2025 02:29:50 -0400

Direct Action: Will It Disrupt Climate Inaction? with Michael Greenberg

Dan Miller and Leon Simons, hosts — Mon, 24 Mar 2025 02:09:07 -0400

In this Climate Chat episode, we interview Climate Defiance founder and executive director Michael Greenberg on the organization's goals, tactics, and successes, and how their strategy may change given the current administration's attacks on climate action and science. Michael Greenberg is the founder and executive director of Climate Defiance. His work focuses on resisting new fossil fuel infrastructure and making climate change a top issue in American politics. Michael and the team’s work has been profiled in the New Republic, New York Times, Washington Post, the Guardian, Bloomberg, Rolling Stone, and hundreds of other sources. In just two year, Climate Defiance garnered over 100 million organic social media impressions and is credited with playing a crucial role in halting drilling on millions of acres in Alaska and pausing new gas export infrastructure. Michael brings over a decade of experience in disruptive direct action. In 2014 he organized 400 college students to face arrest in protest of Keystone. In 2021, Michael started the Treaty People Gathering, mobilizing 2000 people to the Line 3 pipeline route and drawing coverage in sources like the New York Times and PBS. Michael previously worked at Mighty Earth, where he led actions for campaigns to change the agriculture sector and decarbonize heavy industry. Michael started his organizing career in Omaha, where he led the local efforts to press Tyson Foods to clean up its supply chain. Michael graduated from Columbia University with a degree in economics. Climate Defiance website: https://www.climatedefiance.org Follow Climate Defiance on X/Twitter: @ClimateDefiance Follow Climate Defiance on Bluesky: @climatedefiance.bsky.social ---------------- Please Like & Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and moved to YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Reducing Air Pollution Increases Methane?! with Vincent Gauci

Dan Miller and Leon Simons, hosts — Tue, 18 Mar 2025 04:13:31 -0400

In this Climate Chat episode, we interview Dr. Vincent Gauci on how reducing air pollution results in increased atmospheric methane concentrations. Vincent Gauci is professor of Geography and Environmental Sciences and a Birmingham Professorial Fellow at the University of Birmingham in the UK. Professor Gauci investigates how the biosphere interacts with the atmosphere and he explores questions relating to how these interactions respond to various drivers of global change. Article in The Conversation by Dr. Gauci titled "Reducing air pollution could increase methane emissions from wetlands – here’s what needs to be done": https://theconversation.com/reducing-air-pollution-could-increase-methane-emissions-from-wetlands-heres-what-needs-to-be-done-246723 2004 Paper: "Sulfur pollution suppression of the wetland methane source in the 20th and 21st centuries": https://www.pnas.org/doi/10.1073/pnas.0404412101 2025 Paper: "The large role of declining atmospheric sulfate deposition and rising CO2 concentrations in stimulating future wetland CH4 emissions": https://pubmed.ncbi.nlm.nih.gov/39908374/ Dr. Gauci's UoB webpage: https://www.birmingham.ac.uk/staff/profiles/gees/gauci-vincent Follow Vincent on X/Twitter: @gaucigauci and Blusesky: @gaucigauci.bsky.social ---------------- Please Like & Subscribe! Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and moved to YouTube in 2023. Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

The Impact of Climate Change on Water with Peter Gleick

Dan Miller and Leon Simons, hosts — Mon, 17 Mar 2025 02:12:42 -0400

In this Climate Chat episode, we interview Dr. Peter Gleick on the impact that climate change is having, and will have, on water, including water availability, floods, droughts, extreme rainfall, water-driven conflict, and "peak water." Dr. Peter Gleick is a leading scientist, innovator, and communicator on water and climate issues. He co-founded the Pacific Institute in Oakland,California in 1987, one of the most innovative, independent non-governmental research centers, creating and advancing solutions to the world’s most pressing water challenges. He is currently President-emeritus and Senior Fellow at the Institute. Dr. Gleick is a scientist trained at the intersection of hydrology, climatology, and policy. His work has redefined water from the realm of engineers to the world of social justice, sustainability, human rights, and integrated thinking. He developed one of the earliest analyses of the consequences of climate change for water resources, the earliest comprehensive work on water and conflict, and defined basic human needs for water and the human right to water – work that has been used by the United Nations and in human rights court cases. He pioneered the concept of the “soft path for water,” developed the idea of “peak water,” and has written about the history and background of the growing bottled water phenomenon. Dr. Gleick is a MacArthur Fellow, an elected member of the U.S. National Academy of Sciences, the American Academy of Arts and Sciences, and a Fellow of the American Association for the Advancement of Science (AAAS). In 2018 he was awarded the Carl Sagan Prize for Science Popularization. He received his B.S. from Yale University and an M.S. and Ph.D. from the University of California, Berkeley. Dr. Gleick serves on the boards of numerous journals and organizations, and is the author or editor of many scientific papers and books, including the influential series The World’s Water; Bottled and Sold: The Story Behind Our Obsession with Bottled Water; and A Twenty-First Century U.S. Water Policy. His most recent book, The Three Ages of Water: Prehistoric Past, Imperiled Present, and a Hope forthe Future, was published in 2023 by PublicAffairs/Hachette. Peter's personal web page: https://www.gleick.com Peter's Wikipedia entry: https://en.wikipedia.org/wiki/Peter_Gleick Follow Peter on Mastodon: @PeterGleick@fediscience.org Follow Peter on Bluesky: @petergleick.bsky.social ---------------- Please Like & Subscribe! Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

The Impact of Climate Change on Water with Peter Gleick

Dan Miller and Leon Simons, hosts — Mon, 17 Mar 2025 02:12:42 -0400

Overshoot & Climate Change with William Rees

Dan Miller and Leon Simons, hosts — Mon, 10 Mar 2025 03:09:53 -0400

In this Climate Chat episode, we discuss the issue of ecological footprint overshoot and climate change with Professor William E. Rees. William Rees is a bio-ecologist, ecological economist, former Director and Professor Emeritus of the University of British Columbia’s School of Community and Regional Planning. His early research focused on environmental assessment but gradually extended to the biophysical requirements for sustainability and the implications of global ecological trends. Along the way, he developed a special interest in modern cities as ‘dissipative structures’ and therefore as particularly vulnerable components of the total human ecosystem. Rees is perhaps best known as the originator and co-developer (with his graduate students) of ecological footprint analysis—the expanding human eco-footprint is arguably the world’s best-known indicator of the (un)sustainability of techno-industrial society. His book on eco-footprinting (co-authored with his former PhD student, Mathis Wackernagel) has been published in eight languages, including Chinese. Rees is also author of over 150 peer reviewed papers and numerous popular articles on sustainability science and policy. (And sometimes the lack of policy—his recent writing focuses on biological, neuro-cognitive and socially-constructed barriers to progress.) Prof Rees’ academic work has been widely recognized. He has served on numerous advisory committees and lectured by invitation in 30 countries. Rees is a founding member and former President of the Canadian Society for Ecological Economics; a founding Director of the One Earth Initiative; and a Fellow of the Post-Carbon Institute. He was elected to the Royal Society of Canada in 2006 and, in 2007, was awarded a prestigious Trudeau Foundation Fellowship. In 2012, Prof Rees received an Honorary Doctorate from Laval University, the Boulding Prize in Ecological Economics and a Blue Planet Prize (jointly with Dr Wackernagel). He was elected a full member of the Club of Rome in 2014. Dr. Rees' Wikipedia page: https://en.wikipedia.org/wiki/William_E._Rees Dr. Rees' University of British Columbia page: https://news.ubc.ca/expert/william-rees/ ---------------- Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter and Bluesky feeds. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Driving Public Demand for Climate Action with David Fenton

Dan Miller and Leon Simons, hosts — Mon, 03 Mar 2025 02:16:25 -0500

In this Climate Chat episode, I will interview returning guest David Fenton, a Climate Communications Expert & Activist, about the failure of the climate community to engage the public and how we can get the public to demand action on climate change. David founded the largest Public Relations firm focused on social causes, Fenton Communications. After retiring from the firm, David is dedicating his efforts to engaging the public and policymakers on climate change. Over the years, David's clients have included Abby Hoffman, Nelson Mandela and Yoko Ono. David's recent book, "The Activist's Media Handbook", is a must-read for climate activists. David's home page: https://davidfentonactivist.com My previous Climate Chat interview with David (March 2024): Climate Change: A Communications Failure https://youtube.com/live/xJZikHI64hE Follow David on X/Twitter: @dfenton and Bluesky: @dfenton.bsky.social ---------------- Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Driving Public Demand for Climate Action with David Fenton

Dan Miller and Leon Simons, hosts — Mon, 03 Mar 2025 02:16:25 -0500

Hansen Temp Update & Climate Chat Special Announcement

Dan Miller and Leon Simons, hosts — Mon, 24 Feb 2025 03:24:19 -0500

In this Climate Chat episode, Leon Simons and I will discuss the new communication by James Hansen titled "The Acid Test: Global Temperature in 2025" In his message, Hansen discusses what current temperatures say about his theory on why the global temperature has accelerated in recent years. Leon and I will also make an announcement about upcoming enhancements to the Climate Chat channel. Link to Hansen's "The Acid Test: Global Temperature in 2025" communication: https://www.columbia.edu/~jeh1/mailings/2025/Acid.Test.20Feb2025.pdf Link to Hansen's recent paper "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?": https://www.tandfonline.com/doi/full/10.1080/00139157.2025.2434494 Webinar featuring James Hansen discussing the new paper: https://www.youtube.com/live/d6wOjk2OCZQ Dan' summary of Hansen's communication on Twitter/X: https://x.com/danmiller999/status/1892760127985316271 Dan' summary of Hansen's communication on Bluesky: https://bsky.app/profile/danmiller999.bsky.social/post/3linqyiknj22s Climate Chat interview with James Hansen in December 2023: "Climate Change: What to Know/What to Do with Climate Scientist James Hansen": https://youtube.com/live/8Ag3UVSrlhE Recent Climate Chat program with Leon Simons on accelerated warming: https://youtube.com/live/FospTtcVOUI Many other Climate Chat programs on accelerated warming, AMOC collapse, SRM, etc.: https://www.youtube.com/@climatechat/streams Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home ---------------- Dan Miller has been giving talks around the world on the need for urgent climate action for over 20 years. He is co-founder of The Roda Group, a climate-tech venture capital group, and he serves as an advisor for other climate funds and climate-focused non-profit groups. He started Climate Chat in 2021 on Clubhouse and added YouTube in 2023. Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Citizens' Climate Lobby: What Now? with Dana Nuccitelli

Dan Miller and Leon Simons, hosts — Mon, 17 Feb 2025 02:26:44 -0500

In this Climate Chat episode, we speak with Citizens' Climate Lobby's (CCL) Research Coordinator, Dana Nuccitelli, about what CCL does and how it is going to navigate the political environment that is moving away from climate action and science in general. Citizens’ Climate Lobby is a nonprofit, nonpartisan, grassroots advocacy climate change organization focused on national policies to address the national and global climate crisis. Dana Nuccitelli is an environmental scientist and climate journalist with a Master’s Degree in physics. He has written about climate change since 2010 for Skeptical Science, for The Guardian from 2013 to 2018, and since 2018 for Yale Climate Connections. In 2015 he published the book ‘Climatology versus Pseudoscience’, and he has also authored ten peer-reviewed climate studies, including a 2013 paper that found a 97% consensus among peer-reviewed climate science research that humans are the primary cause of global warming. Dana joined CCL’s staff in 2021 after 9 years as a volunteer with its Sacramento chapter. During that time he gave dozens of presentations all around California about climate change impacts like wildfires and droughts, and policy solutions like carbon fee and dividend. Dana has also led CCL’s Science Policy Team since 2017. CCL website: https://citizensclimatelobby.org Dana's CCL web page: https://citizensclimatelobby.org/?team=42062 Follow Dana on X/Twitter: @DanaNuccitelli and Bluesky: @dananuccitelli.bsky.social White paper on Fee and Dividend carbon pricing that I (Dan) co-authored with James Hansen: https://csas.earth.columbia.edu/sites/default/files/content/Fee-and-Dividend-Miller-Hansen-20191110-1.pdf My (Dan's) TEDx talk on climate change and Fee and Dividend carbon pricing: https://youtu.be/0k2-SzlDGko Climate Chat interview on cloud feedbacks (mentioned in the interview): Global Warming➔Fewer Clouds➔More Warming! with George Tselioudis https://youtube.com/live/suFZb2ViHoA ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

New Hansen Paper: "Global Warming Has Accelerated" with Leon Simons

Dan Miller and Leon Simons, hosts — Sun, 09 Feb 2025 16:02:53 -0500

In this Climate Chat episode, Leon Simons and I will discuss the new paper by James Hansen, et al, titled "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?" In the paper, Hansen discusses how the recent IMO regulations on ship emissions were a significant contributor to the recent acceleration in global warming. The paper more broadly shows that aerosols are a significant factor in climate change and their impact is underestimated by the United Nations Intergovernmental Panel on Climate Change (IPCC). Link to the paper "Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?": https://www.tandfonline.com/doi/full/10.1080/00139157.2025.2434494 Webinar featuring James Hansen discussing the new paper: https://www.youtube.com/live/d6wOjk2OCZQ White paper on Fee and Dividend carbon pricing that I co-authored with James Hansen: https://csas.earth.columbia.edu/sites/default/files/content/Fee-and-Dividend-Miller-Hansen-20191110-1.pdf My TEDx talk on climate change and Fee and Dividend carbon pricing: https://youtu.be/0k2-SzlDGko Climate Chat interview with James Hansen in December 2023: "Climate Change: What to Know/What to Do with Climate Scientist James Hansen": https://youtube.com/live/8Ag3UVSrlhE Climate Chat interview with NASA climate scientist George Tselioudis: "Global Warming➔Fewer Clouds➔More Warming! with George Tselioudis": https://youtube.com/live/suFZb2ViHoA Many other Climate Chat programs on accelerated warming, AMOC collapse, SRM, etc.: https://www.youtube.com/@climatechat/streams Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 While not a co-author, Leon got a special acknowledgment in the paper: "Leon Simons, Executive Director, climate researcher, and communicator at the Club of Rome Netherlands, deserves special acknowledgment. Leon informed us about restrictions on aerosol emissions imposed by the International Maritime Organization that led to our present study of global warming acceleration. He has continued to provide information that will aid more complete use of the inadvertent ship aerosol experiment to improve understanding of climate change and actions needed to stabilize climate." Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on the 2023 "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Future of Climate Denial with Tad DeLay

Dan Miller and Leon Simons, hosts — Mon, 03 Feb 2025 02:48:17 -0500

In this Climate Chat episode, we will discuss climate denial (and denial in general) with Tad DeLay, author of "Future of Denial: The Ideologies of Climate Change." Tad will discuss how it is not just conservatives that are in denial of climate change. Tad DeLay is a philosopher, religion scholar, and interdisciplinary critical theorist. He teaches in Baltimore. He is the author of four books. The latest title Future of Denial: The Ideologies of Climate Change (Verso, 2024) examines new types of climate denial, psychoanalytic theory, anti-immigrant violence, expropriation of land in the developing world for carbon offsets, the energy transition, and the stubborn impasse of political economy. Tad's personal website: https://taddelay.com Future of Denial book: https://www.versobooks.com/products/2857-future-of-denial Follow Tad on X/Twitter: @taddelay and BlueSky: @taddelay.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey Randecker on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli Rabani on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Future of Climate Denial with Tad DeLay

Dan Miller and Leon Simons, hosts — Mon, 03 Feb 2025 02:48:17 -0500

Project Drawdown: What Now? with Jonathan Foley

Dan Miller and Leon Simons, hosts — Mon, 27 Jan 2025 03:15:15 -0500

In this Climate Chat episode, we will discuss emissions reduction with Jonathan Foley, Executive Director of Project Drawdown. With a new administration scaling back clean energy, how can the US and the rest of the world make significant greenhouse gas emission reductions? Also, can emission reductions alone maintain a safe climate for our children? Dr. Jonathan Foley is a renowned climate scientist, sustainability expert, educator, and public speaker. He is also executive director of Project Drawdown — the world’s leading resource for climate solutions. His work focuses on finding solutions to sustain the climate, ecosystems, and natural resources we all depend on. Foley’s work has led him to become a trusted advisor to governments, foundations, non-profits, and business leaders around the world. He and his colleagues have made major contributions to our understanding of climate change, ecosystems, and the sustainability of the world’s resources. He has published over 130 peer-reviewed scientific articles, including many highly cited works in Nature and Science. He is among the top 1 percent most-cited scientists in the world. Project Drawdown: https://drawdown.org Jonathan's personal website: https://globalecoguy.org Follow Jonathan on Bluesky: @globalecoguy.bsky.social Follow Project Drawdown on Bluesky: @projectdrawdown.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Project Drawdown: What Now? with Jonathan Foley

Dan Miller and Leon Simons, hosts — Mon, 27 Jan 2025 03:15:15 -0500

University of Exeter Climate Risk Report

Dan Miller and Leon Simons, hosts — Mon, 20 Jan 2025 02:29:29 -0500

In this Climate Chat episode, we will discuss the recently published climate risk report from the University of Exeter's Institute and Faculty of Actuaries. The report is titled: "Planetary Solvency – finding our balance with nature: Global risk management for human prosperity." The report lays out how most previous analyses of have seriously underestimated climate risk and, therefore, policymakers are ill informed. Link to the report: https://actuaries.org.uk/document-library/thought-leadership/thought-leadership-campaigns/climate-papers/planetary-solvency-finding-our-balance-with-nature/ ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Follow Stacey on X/Twitter: @DrivingMzStacey and Bluesky: @bikingmzstacey.bsky.social Follow Eli on X/Twitter: @radsci and Bluesky: @radsci.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

The Risk of Doing vs. Not Doing Solar Geoengineering w/David Keith

Dan Miller and Leon Simons, hosts — Mon, 13 Jan 2025 02:13:59 -0500

In this Climate Chat episode, returning guest, climate scientist David Keith joins us to discuss new research on the projected death tolls from implementing vs. *not* implementing solar geoengineering (a.k.a., Solar Radiation Management or Sunlight Reflection Methods - SRM). David was co-author of a new paper in the Proceedings of the National Academy of Sciences titled "Impact of solar geoengineering on temperature-attributable mortality." Link to paper: https://www.pnas.org/doi/10.1073/pnas.2401801121 David's July 23, 2024 appearance on Climate Chat: "Climate Intervention with Climate Scientist David Keith": https://youtube.com/live/zg46s1Fa3nY David Keith has worked near the interface of climate science, energy technology, and public policy since 1990. He took first prize in Canada’s national physics prize exam, won MIT’s prize for excellence in experimental physics, and was one of TIME Magazine’s Heroes of the Environment. Keith is Professor of Geophysical Sciences and founding faculty director of the Climate Systems Engineering initiative at the University of Chicago. Best known for his work on the science, technology, and public policy of solar geoengineering, Keith led the development of Harvard’s Solar Geoengineering Research Program before moving to Chicago in 2023. His policy work has ranged from analysis of electricity markets and carbon prices to research on public and expert perceptions of risky technologies. Keith’s hardware work includes the first interferometer for atoms, a high-accuracy infrared spectrometer for NASA’s ER-2, the development of an air contactor, and the development of a stratospheric propelled balloon experiment for solar geoengineering. Keith founded Carbon Engineering, a Canadian company developing technology to capture CO2 from ambient air. He teaches science and technology policy, climate science, and solar geoengineering. He has reached more than 150,000 students worldwide with an edX energy course and has authored more than 200 academic publications with a total citation count of more than 20,000. Keith has written for the public through numerous opinion pieces and wrote the book A Case for Climate Engineering. Follow David on Twitter/X: @DKeithClimate Follow David on Bluesky: @davidkeith.bsky.social David's home page is: https://davidkeith.earth ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Global Warming➔Fewer Clouds➔More Warming! with George Tselioudis

Dan Miller and Leon Simons, hosts — Mon, 06 Jan 2025 04:01:24 -0500

In this Climate Chat episode, we speak with NASA climate scientist George Tselioudis about his recent research paper on cloud feedbacks in the climate system titled "Oceanic cloud trends during the satellite era and their radiative signatures." Dr. Tselioudis is a researcher at the NASA Goddard Institute for Space Studies where he heads a research team that analyzes observations and model simulations to investigate cloud, radiation, and precipitation changes with climate and the resulting radiative feedbacks. Research focuses on understanding the relationships between atmospheric dynamics and cloud changes, examining processes such as midlatitude storm properties and their climate variability, and on applying advanced techniques to derive atmospheric states from cloud property retrievals. Dr. Tselioudis received the American Geophysical Union Charles Falkenberg Award in 2004. George's NASA web page: https://www.giss.nasa.gov/staff/gtselioudis.html "Oceanic cloud trends during the satellite era and their radiative signatures" research paper: On Climate Dynamics Journal website (paywall): https://link.springer.com/article/10.1007/s00382-024-07396-8 On Research Square (preprint, no paywall): https://assets-eu.researchsquare.com/files/rs-3974146/v1/df98526c-73b7-4e74-b304-f9740fb8ed1d.pdf?c=1724357255 Science.org article on the research: "Earth’s clouds are shrinking, boosting global warming": https://www.science.org/content/article/earth-s-clouds-are-shrinking-boosting-global-warming Follow George on BlueSky: @neapolitis.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

2024 Was +1.6ºC! What's Next? with Leon Simons

Dan Miller and Leon Simons, hosts — Sun, 29 Dec 2024 15:33:08 -0500

In this Climate Chat episode, returning guest climate scientist Leon Simons will discuss the 2023/2024 accelerated global warming and what the data suggests will lead us to in the future. Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on last year's "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Leon on Patreon: https://www.patreon.com/c/LeonSimons/home James Hansen's May 2024 update: "Comments on Global Warming Acceleration, Sulfur Emissions, Observations" https://www.columbia.edu/~jeh1/mailings/2024/MayEmail.2024.05.16.pdf Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Climate Chat interview with James Hansen: https://youtube.com/live/8Ag3UVSrlhE Prior Climate Chat programs with Leon Simons: Climate Chat: Wake Up Call! What Now? with Leon Simons https://youtube.com/live/ZDtgCaxV6Zs Jevons Paradox & the Rebound Effect with Leon Simons https://youtube.com/live/hv5fwP_3L2Y James Hansen's Update On Global Warming Acceleration with Guest Leon Simons https://youtube.com/live/OcdZvdSh9LQ 2023: +1.54ºC! Why Is Global Warming Accelerating? Interview with Leon Simons https://youtube.com/live/XCPf8vvedSI ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Climate Change: 2024 in Review

Dan Miller and Leon Simons, hosts — Mon, 23 Dec 2024 03:50:03 -0500

In this Climate Chat discussion, we will review the major climate change issues, research findings, and events of 2024. ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

AMOC Weakening Faster Than IPCC Models Say with Climate Scientist Gabriel Pontes

Dan Miller and Leon Simons, hosts — Mon, 16 Dec 2024 02:53:55 -0500

In this Climate Chat discussion, we speak with climate scientist Gabriel Pontes about his recent paper in Nature Geoscience titled "Weakening of the Atlantic Meridional Overturning Circulation driven by subarctic freshening since the mid-twentieth century." Gabriel's research shows that the AMOC is weakening faster than previous climate models show, including models used by the Intergovernmental Panel on Climate Change (IPCC). The faster weakening is caused by a number of factors including fresh water intrusion into the North Atlantic Ocean from melting Arctic ice. Gabriel M. Pontes is a research scientist at the Climate Change Research Centre (CCRC) and the Australian Centre for Excellence in Antarctic Sciences (ACEAS) at the University of New South Wales (UNSW). His work resolves around the oceans' role in the climate system, how oceans had been affected by ice sheets, carbon dioxide and solar radiation in the past and what we can learn from that to inform the future of the oceans. To achieve this he perform simulations with global climate. His recent focus has been focusing on the ocean's response to ice sheet melting and how it impacts global and regional climate. Gabriel's UNSW web page: https://www.unsw.edu.au/staff/gabriel-pontes Nature Geoscience paper (paywall): https://www.nature.com/articles/s41561-024-01568-1 ResearchGate (free PDF of the paper): https://www.researchgate.net/publication/385921849_Weakening_of_the_Atlantic_Meridional_Overturning_Circulation_driven_by_subarctic_freshening_since_the_mid-twentieth_century Article on Gabriel's paper in The Conversation: https://theconversation.com/meltwater-from-greenland-and-the-arctic-is-weakening-ocean-circulation-speeding-up-warming-down-south-238302 Follow Gabriel's UNSW research group on X/Twitter: @ccrc_unsw Follow Gabriel's UNSW research group on Bluesky: @ccrc.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

AMOC Weakening Faster Than IPCC Models Say with Climate Scientist Gabriel Pontes

Dan Miller and Leon Simons, hosts — Mon, 16 Dec 2024 02:53:55 -0500

Being Frank & Honest About Climate Change with Climate Scientist Kevin Anderson

Dan Miller and Leon Simons, hosts — Mon, 09 Dec 2024 03:31:56 -0500

In our third interview with climate scientist Kevin Anderson, we will cover why climate scientists need to be more frank and honest about emissions scenarios, why the rich cutting their emissions is key to staying below 2ºC of warming, the need for solar geo-engineering, COP29, and other subjects. Kevin Anderson holds the Zennström professorship at Uppsala University and is chair of energy and climate change at the School of Mechanical, Aerospace and Civil Engineering (MACE) at the University of Manchester. He has been Deputy and Interim Director of the Tyndall Centre. He is a non-executive director of Greenstone Carbon Management. Kevin is research active with recent publications in Science, Nature and Nature Geosciences. Kevin engages widely across all tiers of government (UK and Sweden) on issues ranging from shale gas, aviation and shipping to the role of climate modelling (IAMs), carbon budgets and ‘negative emission technologies. His analysis previously contributed to the framing of the UK’s Climate Change Act and the development of national carbon budgets. Kevin has a decade’s industrial experience, principally in the petrochemical industry. He is a chartered engineer and a fellow of the Institution of Mechanical Engineers. Kevin's page on Tyndall ºCentre's website: https://tyndall.ac.uk/people/kevin-anderson/ Kevin's Climate Uncensored website: https://climateuncensored.com Follow Kevin on X/Twitter: @KevinClimate or Bluesky: @kevinclimate.bsky.social Nick Breeze's recent interview with Kevin: https://t.co/W98sDuC6hq 1st Climate Chat interview with Kevin: "Going Beyond Dangerous" (May 2021, audio only) Part 1: https://youtu.be/WQCofG9Urr4 Part 2: https://youtu.be/iiE5A78jzOg 2nd Climate Chat interview with Kevin: "Climate Change: Choosing to Fail" (March 2024) https://youtu.be/tVFSJINGueM ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live Climate Chat programs: https://www.youtube.com/@climatechat/streams

Being Frank & Honest About Climate Change with Climate Scientist Kevin Anderson

Dan Miller and Leon Simons, hosts — Mon, 09 Dec 2024 03:31:56 -0500

AI Energy Efficiency Will Increase AI Energy Usage!

Dan Miller and Leon Simons, hosts — Mon, 02 Dec 2024 02:21:21 -0500

In this Climate Chat episode, we will discuss how the Rebound Effect (a.k.a Jevons' Paradox) is impacting and will impact computer/data center/AI energy usage. While computer efficiency has improved by a factor of 10 TRILLION in past 80 years, computer energy use has only increased over that period and is expected to grow multiple-fold over the next 6 years as data center and AI energy use soars. We will discuss how improving the energy efficiency of computers will make the problem worse, not better. Previous Climate Chat program "Jevons Paradox and the Rebound Effect": https://youtube.com/live/hv5fwP_3L2Y Energy sufficiency and rebound effects - Concept paper (see Chapter 2 on the Rebound Effect): https://www.energysufficiency.org/static/media/uploads/site-8/library/papers/sufficiency-rebound-final_formatted_181118.pdf Rebound Effects and ICT: A Review of the Literature: https://gossart.wp.imt.fr/files/2014/10/Rebound_Effects_and_ICT.pdf EMERGING TRENDS FOR ENERGY CONSUMPTION WITHIN ICT DEVICES: https://www.ijeast.com/papers/136-141,Tesma503,IJEAST.pdf The Energy Demand of ICT: A Historical Perspective and Current Methodological Challenges: https://ethz.ch/content/dam/ethz/special-interest/mtec/cepe/cepe-dam/documents/people/baebischer/Aebischer_Hilty_2014_Energy_Demand_ICT_History_Challenges_AAM.pdf ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

COP29 Debacle: What Now? with Dan Kammen

Dan Miller and Leon Simons, hosts — Mon, 25 Nov 2024 02:32:44 -0500

In this Climate Chat episode, we will discuss the COP29 climate conference in Baku, Azerbaijan with Dan Kammen, a Professor of Energy in the Energy and Resources Group at the University of California at Berkeley. We will also discuss the climate implications of the next Trump administration and other topics. Dr. Daniel M. Kammen is a Professor at the University of California, Berkeley, with parallel appointments in the Energy and Resources Group where he serves as Chair, the Goldman School of Public Policy where he directs the Center for Environmental Policy, and the department of Nuclear Engineering. Kammen is the founding director of the Renewable and Appropriate Energy Laboratory (RAEL; http://rael.berkeley.edu), and was director of the Transportation Sustainability Research Center from 2007 – 2015. He was appointed by then Secretary of State Hillary Clinton in April 2010 as the first energy fellow of the Environment and Climate Partnership for the Americas (ECPA) initiative. He began service as the Science Envoy for U. S. Secretary of State John Kerry in 2016, but resigned over President Trump’s policies in August, 2017. He has served the State of California and US federal government in expert and advisory capacities, including time at the US Environmental Protection Agency, US Department of Energy, the Agency for International Development (USAID) and the Office of Science and Technology Policy. Dr. Kammen was educated in physics at Cornell (BA 1984) and Harvard (MA 1986; PhD 1988), and held postdoctoral positions at the California Institute of Technology and Harvard. He was an Assistant Professor and Chair of the Science, Technology and Environmental Policy Program at the Woodrow Wilson School at Princeton University before moving to the University of California, Berkeley. Dr. Kammen has served as a contributing or coordinating lead author on various reports of the Intergovernmental Panel on Climate Change since 1999. The IPCC shared the 2007 Nobel Peace Prize. In 2020 Kammen was elected to the American Academy of Arts & Sciences. Kammen helped found over 10 companies. UC Berkeley website: https://erg.berkeley.edu/people/kammen-daniel-m/ Dan' Kammen's personal website: https://kammen.berkeley.edu Follow Dan Kammen on BlueSky: @dankammen.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

How to Govern Solar Geoengineering - with Shuchi Talati

Dan Miller and Leon Simons, hosts — Mon, 18 Nov 2024 02:32:43 -0500

In this Climate Chat episode, we will discuss the challenge of governing solar geoengineering (also called Solar Radiation Management or Sunlight Reflection Methods) with Shuchi Talati who is the Founder & Executive Director of The Alliance for Just Deliberation on Solar Geoengineering. Dr. Shuchi Talati is a climate technology governance expert and founder of The Alliance for Just Deliberation on Solar Geoengineering (DSG), a nonprofit organization working towards just and inclusive deliberation about research and potential use of solar geoengineering. Prior to DSG, she most recently served as a Presidential Appointee in the Biden-Harris Administration at the U.S. Department of Energy where she was focused on creating just and sustainable frameworks for carbon dioxide removal. Dr. Talati has previously held roles in academia and civil society advising on policy and governance for emerging climate technologies, including as a Visiting Scholar at the Kleinman Center for Energy Policy at the University of Pennsylvania, an AAAS/AIP Congressional Science Fellow in the U.S. Senate and the Fellow on geoengineering research governance and public engagement at the Union of Concerned Scientists. She has a BS in environmental engineering from Northwestern University, an MA in climate and society from Columbia University, and PhD from Carnegie Mellon in engineering and public policy. Dr. Talati is a member of the oversight committee for the Exploring Climate Cooling programme, directed and funded by the Advanced Research and Invention Agency (ARIA), a UK R&D funding agency. This independent committee is designed to strengthen the governance of the programme. She is also an a member of the Advisory Board of Co-CREATE, a contributing author to the American Geophysical Union’s Ethical Framework for Climate Intervention Research, Experimentation, and Deployment, and was the co-chair of the Independent Advisory Committee to oversee SCoPEx, an effort to provide oversight for the proposed solar geoengineering experiment by Harvard University. Follow Shuchi on X/Twitter: @sktalati and Bluesky: ‪@sktalati.bsky.social‬ The Alliance for Just Deliberation on Solar Geoengineering: https://sgdeliberation.org ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Climate Chat: Wake Up Call! What Now? with Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 11 Nov 2024 04:16:38 -0500

In this Climate Chat episode, we will discuss the U.S. election and the potential impact it will have on climate action -- both good and bad -- and the actions we can take. Climate scientist Leon Simons will take us through recent climate change data including ocean warming data that shows a fundamental change in the past two years. Climate change is based on physics and it doesn't care about politics, but climate change will have an increasing impact on politics -- and all of us -- in this decade and beyond. Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on last year's "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons James Hansen's May 2024 update: "Comments on Global Warming Acceleration, Sulfur Emissions, Observations" https://www.columbia.edu/~jeh1/mailings/2024/MayEmail.2024.05.16.pdf Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Climate Chat interview with James Hansen: https://youtube.com/live/8Ag3UVSrlhE Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Climate Change: Choosing to Fail, with Climate Scientist Kevin Anderson https://youtu.be/tVFSJINGueM ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Climate Scientists As Climate Activists with Aaron Thierry

Dan Miller and Leon Simons, hosts — Mon, 04 Nov 2024 02:59:31 -0500

In this Climate Chat episode, we speak with Aaron Thierry about how climate scientists can play a bigger role in driving action on climate change by becoming more involved in climate activism. Dr. Aaron Thierry has background as an ecological scientist, science communicator and environmental campaigner. Having received his original PhD in ecology from the University of Sheffield, he went on to a position as a postdoc on a project researching climate feedbacks in the Arctic. Aaron subsequently left academia to focus his efforts on environmental activism and become a youth campaign coach working for a leading UK environmental charity. However, he has returned to his studies to commence a new PhD at Cardiff University's School of Social Sciences looking at scientific-activism. Here are some of Aaron's most recent papers on scientific activism: From Publications to Public Actions: The Role of Universities in Facilitating Academic Advocacy and Activism in the Climate and Ecological Emergency https://www.frontiersin.org/journals/sustainability/articles/10.3389/frsus.2021.679019/full “No research on a dead planet”: preserving the socio-ecological conditions for academia https://www.frontiersin.org/journals/education/articles/10.3389/feduc.2023.1237076/full Actions speak louder than words: the case for responsible scientific activism in an era of planetary emergency https://royalsocietypublishing.org/doi/10.1098/rsos.240411 Civil disobedience by scientists helps press for urgent climate action https://www.nature.com/articles/s41558-022-01461-y Follow Aaron on X/Twitter: @ThierryAaron Follow Aaron on Bluesky: @thierryaaron.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

How Do We Electrify Everything? with Saul Griffith

Dan Miller and Leon Simons, hosts — Mon, 28 Oct 2024 02:46:10 -0400

In this Climate Chat episode, we will discuss how to electrify everything with inventor, author, and 2007 MacArthur "Genius" recipient Saul Griffith. The purpose of electrifying everything is to transition away from fossil fuels. Saul Griffith is an engineer and inventor. As Founder and Chief Scientist at Otherlab, an independent R&D lab, he helps government agencies and Fortune 500 companies understand energy infrastructure and deep decarbonization. He’s been a principal investigator and project lead on federally-funded research projects for agencies including NASA, Defense Advanced Research Projects Agency (DARPA), Advanced Research Projects Agency–Energy (ARPA-e), National Science Foundation and United States Special Operations Command (SOCOM). He is the author of Electrify and The Big Switch. He was awarded the MacArthur “Genius Grant” in 2007. Saul's personal website: https://www.saulgriffith.com Saul's Rewiring America organization: https://www.rewiringamerica.org Saul's YouTube video on Electrifying Everything: https://youtu.be/Ju01tzpk4QY Follow Saul on X/Twitter: @GriffithSaul ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Solar Geoengineering: Benefits & Risks with Daniele Visioni

Dan Miller and Leon Simons, hosts — Mon, 21 Oct 2024 02:42:07 -0400

In this Climate Chat episode, we will discuss the benefits and risks of cooling the Earth by implementing solar geoengineering (a.k.a, Solar Radiation Management or Sunlight Reflection Methods - SRM) with Cornell climate scientist Daniele Visioni. Daniele Visioni obtained his Ph.D. in Atmospheric Chemistry and Physics from the University of L’Aquila, in Italy, in 2018. He moved to Cornell in the same year, where he started as a Postdoctoral Associate in the Sibley School of Mechanical and Aerospace Engineering. In 2022, he continued on as a Research Associate in the same department, and also became a Research Scientist I at the National Center for Atmospheric Science (NCAR). He joined EAS in the fall of 2023 as Assistant Professor, and retains a courtesy appointment as Affiliate Scientist at NCAR in the Atmospheric Chemistry, Observation and Modeling (ACOM) lab. He’s the co-chair of the Geoengineering Model Intercomparison Project (GeoMIP), and has been a coauthor of the Scientific Assessment of Ozone Depletion: 2022. Daniele's Cornell web page: https://www.engineering.cornell.edu/faculty-directory/daniele-visioni Daniele's GitHub page: https://dan-visioni.github.io Follow Daniele on Twitter/X: @DanVisioni ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social Other Climate Chat programs on solar geoengineering: Solar Geoengineering/Sunlight Reflection Methods: Safe, Effective, Needed? w/ Doug MacMartin https://youtube.com/live/_JBLMsXNmhs Climate Intervention with Climate Scientist David Keith https://youtube.com/live/zg46s1Fa3nY To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Solar Geoengineering: Benefits & Risks with Daniele Visioni

Dan Miller and Leon Simons, hosts — Mon, 21 Oct 2024 02:42:07 -0400

Climate Change & Extreme Weather with Daniel Swain

Dan Miller and Leon Simons, hosts — Mon, 14 Oct 2024 02:44:19 -0400

In this Climate Chat episode, we will discuss the link between climate change and extreme weather including hurricanes, droughts and floods with UCLA climate scientist Daniel Swain. Daniel also hosts the Weather West blog. Dr. Daniel Swain is a climate scientist in the Institute of the Environment and Sustainability at the University of California, Los Angeles, and holds concurrent appointments as a Research Fellow in the Capacity Center for Climate and Weather Extremes at the National Center for Atmospheric Research (NCAR). Daniel studies the changing character, causes, and impacts of extreme weather and climate events on a warming planet–with a particular focus on the physical processes leading to droughts, floods, and wildfires. He holds a PhD in Earth System Science from Stanford University and a B.S. in Atmospheric Science from the University of California, Davis. Daniel’s Weather West blog: https://weatherwest.com Daniel’s UCLA web page: https://www.ioes.ucla.edu/person/daniel-swain/ Follow Daniel Swain on X/Twitter: @Weather_West Follow Daniel Swain on Vluesky: @weatherwest.bsky.social ---------------- Follow Dan Miller on X/Twitter: @danmiller999 Follow Dan Miller on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Climate Change & Extreme Weather with Daniel Swain

Dan Miller and Leon Simons, hosts — Mon, 14 Oct 2024 02:44:19 -0400

The Geopolitics of Geoengineering with Cynthia Scharf

Dan Miller and Leon Simons, hosts — Mon, 07 Oct 2024 02:54:49 -0400

In this Climate Chat episode, we will discuss the need for governance of both research and deployment of solar geoengineering, aka, Solar Radiation Management (SRM) with Cynthia Scharf who is senior advisor to the International Center for Future Generations, a European think tank, where she leads their work on climate intervention technologies. Cynthia was previously the senior strategy director for the Carnegie Climate Governance (C2G) Initiative, which sought to advance policy discussions and international governance of solar geoengineering and large-scale carbon removals. Cynthia has written widely on these topics including in Foreign Policy, Science Magazine, and Fortune and spoken at the World Bank, the Vatican, American Geophysical Union, Columbia and Yale Universities, among others. She previously served at the UN as the head of strategic climate communications and chief speechwriter on climate change for United Nations Secretary-General Ban Ki-moon from 2009-2016. She also supported and advised the Secretary-General during the UNFCCC negotiations, including the landmark Paris climate change agreement in 2015. Cynthia received her M.A. from Georgetown, was a fellow at the Children’s Investment Fund Foundation, and served on the board of GreenFaith, a multi-faith climate advocacy organization. International Center for Future Generations: https://icfg.eu ---------------- Related Climate Chat content: Solar Geoengineering/Sunlight Reflection Methods: Safe, Effective, Needed? w/ Doug MacMartin https://youtube.com/live/_JBLMsXNmhs Climate Intervention with Climate Scientist David Keith https://youtube.com/live/zg46s1Fa3nY Climate Change and the Trolley Problem https://youtube.com/live/sgs_tboPwvA Follow Dan on X/Twitter: @danmiller999 Follow Dan on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

The Geopolitics of Geoengineering with Cynthia Scharf

Dan Miller and Leon Simons, hosts — Mon, 07 Oct 2024 02:54:49 -0400

Aerosols & Rapid Climate Change with Leon Simons & Eliot Jacobson

Dan Miller and Leon Simons, hosts — Mon, 30 Sep 2024 03:09:04 -0400

In this Climate Chat episode, we will discuss the role of aerosols in the recent rapid acceleration of global warming as well as how aerosols have impacted warming since the industrial revolution. My guests for this discussion is climate scientist Leon Simons and Prof. Eliot Jacobson Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on last year's "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Prof. Eliot Jacobson received his Ph.D. in mathematics from the University of Arizona in 1983. He was a professor of mathematics at Ohio University from 1983 to 1998, getting tenure in 1989. From 1999 to 2009, he was a Visiting Associate Professor of Computer Science at UC Santa Barbara and this position turned into a full-time teaching (Lecturer) position. Prof. Jacobson then pursued his interest in gambling and became a consultant to the gambling industry. While not a climate scientist, his interest in (and alarm of) climate change grew and Prof. Jacobson began writing about climate change on his website https://climatecasino.net James Hansen's May 2024 update: "Comments on Global Warming Acceleration, Sulfur Emissions, Observations" https://www.columbia.edu/~jeh1/mailings/2024/MayEmail.2024.05.16.pdf Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Climate Chat interview with James Hansen: https://youtube.com/live/8Ag3UVSrlhE Follow Leon on X/Twitter: @LeonSimons8 and Bluesky: ‪@leonsimons.bsky.social‬ Follow Eliot on X/Twitter: @EliotJacobson and Bluesky: @eliotjacobson.bsky.social ---------------- Follow Dan on X/Twitter: @danmiller999 Follow Dan on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/@climatechat For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Investing Smarter in Climate Solutions. With Prime Coalition's Keri Browder

Dan Miller and Leon Simons, hosts — Mon, 23 Sep 2024 02:06:16 -0400

In this Climate Chat episode, we talk with Prime Coalition's Keri Browder about what Prime is doing to invest in more risky climate solution companies and how Prime's Project Frame is trying to make it easier for all investors to invest in effective climate solution companies. As Prime Coalition’s Director of Impact Accountability and Director of Project Frame, Keri Browder creates opportunities for investors to share tools and best practices that catalyze, deepen, and accelerate diverse solutions that massively reduce GHG emissions. An environmentalist at heart, Keri has dedicated her career to tackling tough problems. Before Prime, she led the expansion of global programs, including Ocean Conservancy’s Urban Ocean, Tetra Tech’s USAID WASH-FIN, and supported initiatives to protect voting rights in the U.S. and expand community-based policing reform in Colombia. Her experiences emboldened her call to action against climate change and belief that partnership, investment, policy, and impact evaluation can work in concert to meet the challenge. She holds a graduate certificate in Social Finance from Oxford University as well as undergraduate and graduate degrees in political science from the College of Charleston and Universidad de Los Andes. Prime Coalition: https://www.primecoalition.org Project Frame: https://projectframe.how Prime Coalition on X/Twitter: @PRIMEcoalition ---------------- Follow Dan on X/Twitter: @danmiller999 Follow Dan on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Solar Geoengineering One Balloon at a Time? with Luke Iseman

Dan Miller and Leon Simons, hosts — Mon, 16 Sep 2024 02:50:22 -0400

In this Climate Chat episode, we talk with Make Sunsets co-founder Luke Iseman about his approach to "cooling the Earth" by launching balloons into the stratosphere with tiny amounts of sulfur in them. While purposefully putting sulfur into the stratosphere at large scale (called solar geoengineering or solar radiation management (SRM)) is proposed as way to offset global warming, many in the SRM community are opposed to Make Sunsets' "rouge" approach. Before co-founding Make Sunsets, Luke founded a number of companies in the agriculture and smart home spaces and he was Director of Hardware at Y Combinator. Luke holds a BS in Economics from The Wharton School. Make Sunsets website: https://makesunsets.com Luke's homepage: https://lukeiseman.com ---------------- Follow Dan on X/Twitter: @danmiller999 Follow Dan on Bluesky: @danmiller999.bsky.social and @climatechat.bsky.social To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Talking About Climate with Katharine Hayhoe

Dan Miller and Leon Simons, hosts — Mon, 09 Sep 2024 02:32:55 -0400

In this Climate Chat episode, we interview climate scientist Katharine Hayhoe about how to engage the public and policymakers on climate action. We will discuss her book, "Saving Us," and talk about the state of climate and the actions needed to maintain a safe climate for future generations. Katharine Hayhoe is an atmospheric scientist whose research focuses on understanding what climate change means for people and the places where we live. She is the Chief Scientist for The Nature Conservancy and a Horn Distinguished Professor and Endowed Professor of Public Policy and Public Law in the Dept. of Political Science at Texas Tech University. She is the author of the book “Saving Us: A Climate Scientist’s Case for Hope and Healing in a Divided World,” has given a TED talk with over 4 million views, and she also hosts the PBS digital series Global Weirding. Katharine has been named one of TIME's 100 Most Influential People, the United Nations Champion of the Environment, and the World Evangelical Alliance’s Climate Ambassador. Katharine's home page: http://www.katharinehayhoe.com Website for "Saving Us" book: https://www.simonandschuster.com/books/Saving-Us/Katharine-Hayhoe/9781982143848 ---------------- Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Talking About Climate with Katharine Hayhoe

Dan Miller and Leon Simons, hosts — Mon, 09 Sep 2024 02:32:55 -0400

Jevons Paradox & the Rebound Effect with Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 02 Sep 2024 03:01:04 -0400

In this Climate Chat episode, we discuss Jevons Paradox and the related Rebound Effect. Jevons Paradox says the the more efficiently a resource is used, the more that resource will be used in total. This presents a challenge for climate solutions because it says that improving the energy efficiency of products will not necessarily result in lower energy use (in total) and may actually increase energy use! The Rebound Effect says that increases in efficiency do not result in the expected energy savings because the lower costs of using the more efficient product results in more total use of the product or that savings are used to buy or use other products or services that result in more energy usage than expected. The main difference between the Rebound Effect and Jevons Paradox is that the Rebound Effect applies to any reduction in expected energy savings while Jevons Paradox normally applies to reductions in energy savings that are more than 100% (i.e., energy increases). Efficiency improvements that result in increased total energy use are referred to as "Backfire." Jevons Paradox on Wikipedia: https://en.wikipedia.org/wiki/Jevons_paradox Rebound Effect on Wikipedia: https://en.wikipedia.org/wiki/Rebound_effect_(conservation) We can stop the Rebound Effect by taxing the thing we don't want to expand. In the case of fossil fuels, this means putting a price on carbon. The best way to do that is the "Fee and Dividend" policy. Here is my TEDx talk on that: https://youtu.be/0k2-SzlDGko ---------------- Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Restoring the Atmosphere: Interview with Climate Scientist Rob Jackson

Dan Miller and Leon Simons, hosts — Mon, 19 Aug 2024 02:41:42 -0400

In this Climate Chat episode, we speak with Stanford climate scientist Rob Jackson about his new book "Into the Clear Blue Sky" in which he describes how we can restore the atmosphere to near pre-industrial condition. We will discuss methane, CO2 and other greenhouse gases that are too plentiful today and how we can get back to a safe climate. Rob Jackson is the Chair of the Global Carbon Project, a Senior Fellow at Stanford’s Woods Institute for the Environment and Precourt Institute for Energy, and a professor of earth science at Stanford University. Through global scientific leadership and groundbreaking research, communications, and policy activities, Jackson’s work has reduced millions of tons of greenhouse gas emissions and improved human health, safety, and air and water quality. One of the top five most-cited climate and environmental scientists in the world, he has authored more than 400 peer-reviewed publications, and his writings have appeared in many outlets, including The New York Times, Scientific American, and The Washington Post. Jackson lives in Stanford, California. Rob's Stanford profile: https://profiles.stanford.edu/jackson Rob's personal/book website: https://intotheclear.com ---------------- Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Restoring the Atmosphere: Interview with Climate Scientist Rob Jackson

Dan Miller and Leon Simons, hosts — Mon, 19 Aug 2024 02:41:42 -0400

Humans Have Doubled Greenhouse Gas Forcing - Discussion with Eliot Jacobson & Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 12 Aug 2024 03:32:29 -0400

In this Climate Chat episode, we discuss greenhouse gas forcing, ocean temperature records, and Earth Energy Imbalance (EEI), and other subjects with Eliot Jacobson an Leon Simons. While Eliot is known as a "climate doomer," he also compiles and presents climate information is useful forms for everyone to use, view, and understand. Prof. Eliot Jacobson received his Ph.D. in mathematics from the University of Arizona in 1983. He was a professor of mathematics at Ohio University from 1983 to 1998, getting tenure in 1989. From 1999 to 2009, he was a Visiting Associate Professor of Computer Science at UC Santa Barbara and this position turned into a full-time teaching (Lecturer) position. Prof. Jacobson then pursued his interest in gambling and became a consultant to the gambling industry. While not a climate scientist, his interest in (and alarm of) climate change grew and Prof. Jacobson began writing about climate change on his website https://climatecasino.net Previous Climate Chat interview with Eliot: "Discussion with a Climate Doomer" https://youtube.com/live/2YBpKduVvqA Eliot's write up on CO2e: https://climatecasino.net/2024/08/the-long-and-winding-road-to-co2e/ Follow Eliot on Twitter/X: @EliotJacobson ------------- Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on last year's "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Hansen' May 2024 update: "Comments on Global Warming Acceleration, Sulfur Emissions, Observations" https://www.columbia.edu/~jeh1/mailings/2024/MayEmail.2024.05.16.pdf Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Climate Chat interview with James Hansen: https://youtube.com/live/8Ag3UVSrlhE For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg Follow Leon on Twitter/X: @LeonSimons8 ---------------- Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The Clubhouse link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

The Language of Climate Politics with Author Genevieve Guenther

Dan Miller and Leon Simons, hosts — Mon, 05 Aug 2024 02:45:38 -0400

In this Climate Chat episode, we interview author Genevieve Guenther about her recent book "The Language of Climate Politics." In the book, she points out how certain words and framings promoted by the fossil fuel industry make their way into our everyday discourse and are used even by climate action advocates. Dr. Genevieve Guenther is the founding director of End Climate Silence and affiliate faculty at The New School, where she sits on the board of the Tishman Environment and Design Center. Dr. Guenther advises NGOs, corporations, and policymakers on fossil-fuel disinformation and climate communication. Her research has appeared in both scholarly journals and media outlets such as Scientific American, The New Republic, and MSNBC, and she has been invited to speak about climate and language to audiences at Duke, Columbia, and Harvard, among other universities. She lives in New York City with her family. Genevieve's home page: https://genevieveguenther.com Follow Dr. Guenther on Twitter/X: @DoctorVive ------------- Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Climate Reality: Interview with Ken Berlin of Climate Reality Project & Atlantic Council

Dan Miller and Leon Simons, hosts — Mon, 29 Jul 2024 02:18:10 -0400

In this Climate Chat episode, we interview Ken Berlin, former President & CEO of Al Gore's Climate Reality Project and Senior Fellow of the Atlantic Council, a think tank focused on climate and energy. We will discuss how the Climate Reality Project engages people on climate and we will also discuss Ken's work on cost competitive climate solutions at the Atlantic Council. Ken Berlin is a senior fellow and the director of the Financing and Achieving Cost Competitive Climate Solutions Project at the Atlantic Council’s Global Energy Center. He has devoted his career to leadership on environment, energy, and climate-change issues. From 2014 to May 2022, Berlin was the president and chief executive officer of the Climate Reality Project, an organization founded and chaired by former US vice president Al Gore. He built the project into an international organization with offices in eleven countries and 130 chapters in the United States. The Climate Reality Project is dedicated to building public support for addressing the climate crisis. It has led multi-day trainings for over forty thousand climate activists, gathered the activists into a powerful international grassroots network, and activated them to work on climate-crisis issues and solutions. Berlin was a co-founder with Reed Hundt in 2010 of the Coalition for Green Capital, an organization that works with governments at the international, national, state, and local levels to establish green bank finance institutions to accelerate the deployment of renewable energy, energy efficiency and clean transportation. Prior to that, he chaired the Environmental and Climate Change practices at the law firm of Skadden Arps where he was recognized as one of the leading climate-change attorneys in the United States and internationally. He has extensive legal and policy expertise on US and international environmental issues including clean energy; corporate compliance; environmental, social, and corporate governance; biodiversity; and forestry. Berlin has served as chairman of the board of the Environmental Law Institute, the Center for International Environmental Law, the American Bird Conservancy, and Rare. He has served on the boards of other wildlife and environmental organizations and was involved with founding of the Alliance for Zero Extinction. He founded the Wildlife and Marine Resource s Section in the US Department of Justice. Berlin is a graduate of the University of Pennsylvania and Columbia Law School. Ken's Atlantic Council page: https://www.atlanticcouncil.org/expert/ken-berlin/ Policy papers from the Atlantic Council that we will discuss: Transitioning to the clean energy grid: A deep dive into the levelized cost of electricity: https://www.atlanticcouncil.org/in-depth-research-reports/issue-brief/transitioning-to-the-clean-energy-grid-a-deep-dive-into-the-levelized-cost-of-electricity/ Guarantees 2.0: Meeting Climate Finance Needs in the Global South: https://www.atlanticcouncil.org/in-depth-research-reports/issue-brief/guarantees-2-0-meeting-climate-finance-needs-in-the-global-south/ The flaws in project-based carbon credit trading and the need for jurisdictional alternatives: https://www.atlanticcouncil.org/in-depth-research-reports/issue-brief/the-flaws-in-project-based-carbon-credit-trading-and-the-need-for-jurisdictional-alternatives/ ------------- Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Climate Intervention with Climate Scientist David Keith

Dan Miller and Leon Simons, hosts — Wed, 24 Jul 2024 01:25:11 -0400

In this Climate Chat episode, we interview climate scientist David Keith, Professor of Geophysical Science at the University of Chicago where he leads the Climate Systems Engineering program. David previously ran a similar program at Harvard. Dr. Keith founded Carbon Engineering, a company that captures CO2 from the atmosphere. We will discuss the feasibility, safety, scalability, and political ramifications of climate interventions such as carbon capture and Sunlight Reflection Methods (SRM), a.k.a., solar-geoengineering. Follow David on Twitter/X: @DKeithClimate David's home page is: https://davidkeith.earth Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Climate Intervention with Climate Scientist David Keith

Dan Miller and Leon Simons, hosts — Wed, 24 Jul 2024 01:25:11 -0400

Is Climate Change Funny? Interview with Adam McKay

Dan Miller and Leon Simons, hosts — Mon, 22 Jul 2024 02:29:10 -0400

In this Climate Chat episode, we interview Adam McKay, a screenwriter, producer, and director known for "Don't Look Up", "The Big Short", "Vice", "Anchorman", and "Succession", among many, many other films and TV shows. Adam was head writer for Saturday Night Live from 1995 to 2001. In 2023, Adam founded Yellow Dot Studios, a non-profit production company that makes short-form videos that raise awareness and mobilize action on the climate emergency. We will discuss the role of humor in engaging people on climate, the impact of "Don't Look Up", and how he thinks Yellow Dot Studios can move the needle on climate action. Follow Adam on Twitter/X: @ZombiePanther2 View/donate to Yellow Dot Studios: https://yellowdotstudios.com Follow Yellow Dot Studios on YouTube: @YellowDotStudios Follow Yellow Dot Studios on Twitter/X: @weareyellowdot Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Can We Rapidly Move to 100% Renewables? - Interview with Stanford's Mark Jacobson

Dan Miller and Leon Simons, hosts — Mon, 15 Jul 2024 02:25:58 -0400

In this Climate Chat episode, we interview Stanford professor Mark Z. Jacobson about his research that shows we can rapidly transition to 100% renewable energy. This is a controversial position, yet with renewable energy costs dropping rapidly, many parts of the world already generate 100% of their electricity in certain parts of the day from renewables. We will discuss the state of renewables today, the path to 100% renewables, and we will discuss some the issues that naysayers say will prevent us from achieving 100% renewable energy. Mark Z. Jacobson’s career has focused on better understanding air pollution and global warming problems and developing large-scale clean, renewable energy solutions to them. Toward that end, he has developed and applied three-dimensional (3-D) atmosphere-biosphere-ocean computer models and solvers to simulate and understand air pollution, weather, climate, and renewable energy systems. He has also developed roadmaps to transition countries, states, cities, and towns to 100% clean, renewable energy for all purposes and computer models to examine grid stability in the presence of 100% renewable energy. Jacobson has been a professor at Stanford University since 1994. He has published over 185 peer-reviewed journal articles, given ~750 invited talks, published six books, and founded (in 2004) and still directs the Atmosphere/Energy Program at Stanford. His research crosses two fields: Atmospheric Sciences and Energy, Mark's Stanford home page: https://web.stanford.edu/group/efmh/jacobson/ Mark's latest book: "No Miracles Needed: How Today's Technology Can Save Our Climate and Clean Our Air" https://web.stanford.edu/group/efmh/jacobson/WWSNoMN/NoMiracles.html Mark's March 2023 webinar on how to achieve 100% renewables: https://youtu.be/k_enAFPeVMg Follow Mark on Twitter/X: @mzjacobson Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Can We Rapidly Move to 100% Renewables? - Interview with Stanford's Mark Jacobson

Dan Miller and Leon Simons, hosts — Mon, 15 Jul 2024 02:25:58 -0400

How We Will Respond to Climate Change w/ George Marshall

Dan Miller and Leon Simons, hosts — Mon, 08 Jul 2024 02:47:32 -0400

In this second Climate Chat interview with George Marshall, we discuss George's previous book, "DON’T EVEN THINK ABOUT IT: Why Our Brains Are Wired to Ignore Climate Change" which dealt with how our brains are not very good with dealing with future, long-term problems that don't trigger our threat response. We will also discuss George's upcoming book where he explores how we (as individuals, governments, and societies) will respond as climate catastrophe intensifies. This is a critical but practically unspoken subject. Link to previous Climate Chat interview with George Marshall (audio only): https://youtu.be/S-Kkwghdnp0 Link to George's "Don't Even Think About It" book on Amazon: https://www.amazon.com/Dont-Even-Think-About-Climate/dp/B0C6YD5R5C/ Follow George on Twitter/X: @climategeorge Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot it. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg For recent YouTube Live programs: https://www.youtube.com/@climatechat/streams

Hansen on Cooling & SCOTUS on Chevron Doctrine

Dan Miller and Leon Simons, hosts — Mon, 01 Jul 2024 03:35:25 -0400

In this Climate Chat discussion, we discuss climate scientist James Hansen's and Leon Simons's recent white paper titled "The World Will Cool Off – A Bit – and Other Good News!” and we will also talk about the US Supreme Court's recent "Chevron Doctrine" decision, as well as other climate-related news. Link to Hansen's white paper: https://mailchi.mp/caa/the-world-will-cool-off-a-bit-and-other-good-news My Twitter/X summary of Hansen's white paper: https://x.com/danmiller999/status/1806413729711730732 Washington Post article on the Supreme Court's Chevron Doctrine decision: https://www.washingtonpost.com/climate-environment/2024/06/28/supreme-court-chevron-environmental-rules/ Related Climate Chat programs: James Hansen's Update On Global Warming Acceleration with Guest Leon Simons https://youtube.com/live/OcdZvdSh9LQ Climate Change: What to Know/What to Do with Climate Scientist James Hansen https://youtube.com/live/8Ag3UVSrlhE Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Systems Thinking for Climate Change

Dan Miller and Leon Simons, hosts — Mon, 24 Jun 2024 02:44:41 -0400

In this Climate Chat discussion, we discuss what systems thinking is and why it is important for understanding and addressing climate change. Related Climate Chat programs: 20-Point Global Policy Plan to Address Climate Change https://youtube.com/live/p2496OB1EmI Barriers to Climate Action https://youtube.com/live/olcYG0LwJlw Climate Change: Choosing to Fail, with Climate Scientist Kevin Anderson https://youtu.be/tVFSJINGueM James Hansen's Update On Global Warming Acceleration with Guest Leon Simons https://youtube.com/live/OcdZvdSh9LQ Climate Change: What to Know/What to Do with Climate Scientist James Hansen https://youtube.com/live/8Ag3UVSrlhE Systems thinking resources: SYSTEMS THINKING: WHAT, WHY, WHEN, WHERE, AND HOW? https://thesystemsthinker.com/systems-thinking-what-why-when-where-and-how/ CAN SYSTEMS THINKING SOLVE THE CLIMATE CRISIS? https://www.theatlantic.com/sponsored/deloitte-2022/can-systems-thinking-solve-the-climate-crisis/3781/ Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

So, Are We at 1.5ºC Now?

Dan Miller and Leon Simons, hosts — Mon, 17 Jun 2024 02:38:45 -0400

In this Climate Chat discussion, we discuss the recent controversy, partially caused by our interview last week with climate scientist Michael Mann, over whether we are at or close to 1.5ºC global average temperature anomaly "trend". While Dr. Mann and others say we are at a trend of about 1.3ºC now, others, including climate scientist James Hansen say we may at 1.5ºC now "for all practical purposes". We will discuss recent temperature measurements and the difference between a yearly reading like 2023 or "past 12 months" and what it means to be at or pass the 1.5ºC trend. We will also step back and discuss the value of milestones like 1.5ºC and 2ºC above the pre-industrial global average temperature. Related Climate Chat programs: Climate Wars and Fragile Moments: An interview with Climate Scientist Michael Mann https://youtube.com/live/T4sMkZKm91g “Accelerating” Debate on Global Warming: Interview with Dr. Zeke Hausfather https://youtube.com/live/LoegRrN-yvw Much Ado About Accelerating Warming: Interview with Gavin Schmidt https://youtube.com/live/mhvNVihv5Ww 2023: +1.54ºC! Why Is Global Warming Accelerating? Interview with Leon Simons https://youtube.com/live/XCPf8vvedSI James Hansen's Update On Global Warming Acceleration with Guest Leon Simons https://youtube.com/live/OcdZvdSh9LQ Climate Change: What to Know/What to Do with Climate Scientist James Hansen https://youtube.com/live/8Ag3UVSrlhE Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Wars and Fragile Moments: An interview with Climate Scientist Michael Mann

Dan Miller and Leon Simons, hosts — Mon, 10 Jun 2024 02:08:20 -0400

In this Climate Chat discussion, Michael Mann joins us to discuss the latest climate science as well as his recent books, Our Fragile Moment and The New Climate Wars. Dr. Michael E. Mann is Presidential Distinguished Professor in the Department of Earth and Environmental Science at the University of Pennsylvania, with a secondary appointment in the Annenberg School for Communication. He is director of the Penn Center for Science, Sustainability, and the Media (PCSSM). Dr. Mann received his undergraduate degrees in Physics and Applied Math from the University of California at Berkeley, an M.S. degree in Physics from Yale University, and a Ph.D. in Geology & Geophysics from Yale University. His research interests include the study of Earth's climate system and the science, impacts and policy implications of human-caused climate change. Dr. Mann's homepage (with links to his books): https://michaelmann.net Follow Dr. Mann on X/Twitter: @MichaelEMann Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Wars and Fragile Moments: An interview with Climate Scientist Michael Mann

Dan Miller and Leon Simons, hosts — Mon, 10 Jun 2024 02:08:20 -0400

Barriers to Climate Action

Dan Miller and Leon Simons, hosts — Mon, 03 Jun 2024 03:06:51 -0400

In this Climate Chat discussion, host Dan Miller will discuss why we continue to choose to fail to act on climate. In last week's episode, Dan discussed his 20-point global climate action plan. While the policies presented are obviously needed, we continue to muddle along without taking serious action even though we know it is needed. Why is that? After Dan put together his policy plan several years ago, he wondered why we fail to act on climate and so he made another list -- which is significantly longer than his policy plan list -- of some of the reasons we fail to act. Some of the reasons are related to human cognitive limitations, some are related to limits to communications and education, some are due to the political system, some related to inertia of systems, and some are due to the interest of a few vs. the interest of the many. Here is the list posted on X/Twitter: https://x.com/danmiller999/status/1796424795644744154 Here is a link to the episode on Dan's 20-point climate action plan: https://youtube.com/live/p2496OB1EmI You can view Dan's TEDx talk on climate change and Fee and Dividend carbon pricing policy. It includes a discussion of the psycology of climate inaction: https://youtu.be/0k2-SzlDGko Carl Bergstrom's paper on how disinformation is as big a threat to civilization as climate change is: https://www.pnas.org/doi/10.1073/pnas.2025764118 Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

20-Point Global Policy Plan to Address Climate Change

Dan Miller and Leon Simons, hosts — Mon, 27 May 2024 03:11:31 -0400

In this Climate Chat discussion, host Dan Miller will present a talk he recently gave at the Middlebury Institute of International Studies (MIIS) in Monterey on his proposed 20-point climate action plan. The plan lays out the major policies that governments around the world should implement once they decide to choose to succeed on climate action. You can see a list of the 20-point plan here: https://x.com/danmiller999/status/1657974866115457024 You can view Dan's TEDx talk on climate change and Fee and Dividend carbon pricing policy here: https://youtu.be/0k2-SzlDGko Here is another (US-focused) policy plan to address climate change from New Consensus: https://www.newconsensus.com/mfa Follow Dan on X/Twitter: @danmiller999 To join the Zoom discussion, visit Dan's Clubhouse room. The link is provided in Dan's Twitter feed. You can also leave a question in the YouTube Live chat. Please begin your question with "Question:" to make it easy for our mods to spot. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

20-Point Global Policy Plan to Address Climate Change

Dan Miller and Leon Simons, hosts — Mon, 27 May 2024 03:11:31 -0400

Climate Change: Choosing to Fail, with Climate Scientist Kevin Anderson

Dan Miller and Leon Simons, hosts — Mon, 11 Mar 2024 15:18:19 -0400

In this Climate Chat episode, we interview climate scientist Kevin Anderson for a 2nd time. Out first, audio-only, interview in May 2021 was one of the most listened to Climate Chat programs. Kevin tells it like it is and does not sugarcoat the situation. We will discuss carbon budgets and global temperatures, the desirability of carbon dioxide removal (CDR) and Sunlight Reflection Methods (SRM), and get Kevin's view on James Hansen's recent "Pipeline" paper. We will also discuss why society has so far chosen to fail on addressing climate change and what we can do if we decide to choose to succeed. Kevin’s website is https://climateuncensored.com and he has an active twitter account at: @KevinClimate May 2021 interview with Kevin (audio-only) Part 1: https://youtu.be/WQCofG9Urr4 May 2021 interview with Kevin (audio-only) Part 2: https://youtu.be/iiE5A78jzOg For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Change: Choosing to Fail, with Climate Scientist Kevin Anderson

Dan Miller and Leon Simons, hosts — Mon, 11 Mar 2024 15:18:19 -0400

2023: +1.54ºC! Why Is Global Warming Accelerating? Interview with Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 22 Jan 2024 02:44:07 -0500

In this Climate Chat episode we discuss the rapid acceleration of global warming with climate scientist Leon Simons. The Berkeley Earth dataset shows the average global surface temperature in 2023 was +1.54ºC above the pre-industrial average. This is far above previous years and while there was an El Niño starting in 2023, it cannot explain the full jump in global temperature. Leon Simons is a climate scientist based in the Netherlands. He was a co-author with James Hansen on last year's "Global Warming in the Pipeline" paper that discussed the recent acceleration in global warming. Leon's work has focused recently on changes in aerosol emissions from ships and the impact of those changes on climate change. You can access Leon's research writings here: https://www.researchgate.net/profile/Leon-Simons Berkeley Earth report on 2023 temperature: https://berkeleyearth.org/press-release-2023-was-the-warmest-year-on-recordpress-release/ Landmark "Global Warming in the Pipeline" paper by James Hansen, Leon Simons, and others: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Climate Chat interview with James Hansen: https://youtube.com/live/8Ag3UVSrlhE For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

2023: +1.54ºC! Why Is Global Warming Accelerating? Interview with Leon Simons

Dan Miller and Leon Simons, hosts — Mon, 22 Jan 2024 02:44:07 -0500

"How Protest & Collective Action Can Drive Climate Action" with Dr. Johanna Vollhardt

Dan Miller and Leon Simons, hosts — Mon, 15 Jan 2024 03:17:11 -0500

In this Climate Chat episode we discuss the types of protest and collective action that might be effective in engaging individuals and society to take climate action seriously. Our guest is Dr. Johanna Vollhardt, Associate Professor in the Department of Psychology at Clark University. Dr. Vollhardt’s research focuses on the psychological impact of collective victimization, focusing on questions such as: how do people make sense of oppression and violence against their group? How do different beliefs about collective victimization relate to intergroup attitudes and social and political views? What explains different resistance strategies in violent and repressive contexts? How is group-based power understood in the context of oppression? Her home page is at: https://www.clarku.edu/faculty/profiles/johanna-vollhardt/ For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

"How Protest & Collective Action Can Drive Climate Action" with Dr. Johanna Vollhardt

Dan Miller and Leon Simons, hosts — Mon, 15 Jan 2024 03:17:11 -0500

When Will the AMOC Collapse? Lightning Round Interview with Peter Ditlevsen

Dan Miller and Leon Simons, hosts — Wed, 10 Jan 2024 16:47:53 -0500

In this special Climate Chat "Lightning Round" episode we discuss when the Atlantic Meridional Overturning Circulation (AMOC) ocean current -- a major climate tipping point -- will shutdown. While the IPCC says the AMOC is unlikely to shutdown this century, a recent paper co-authored by Peter Ditlevsen says we could see the AMOC shutdown around mid-century... and possibly as soon as 2025! Here is the link to the long interview with Peter: https://youtu.be/OYmCWkBwGpg Note: This Lightning Round interview is separate from the long interview and is not an edited version of the long interview. Timestamps: 0:00:46 Peter Ditlevsen’s introduction 0:01:18 What is the Atlantic Meridional Overturning Circulation or AMOC? 0:02:02 How does the AMOC relate to the Gulf Stream? 0:02:52 How does the AMOC affect the way of life in Europe and other places? 0:03:43 What drives the AMOC ocean current? 0:04:31 Has the AMOC collapsed in the past? 0:05:23 How is climate change affecting the AMOC? 0:06:24 It’s hard to measure the past AMOC current directly. How did you study it? 0:07:31 Has the AMOC slowed downed recently? 0:08:58 On our current emissions path, what does your research say about when the AMOC will start shutting down? 0:09:49 Why does the IPCC say the AMOC will not shut down this century? 0:12:50 Why do you think you are correct and the IPCC is wrong? 0:13:14 If the AMOC begins to collapse, how long before it is “shut off”? 0:14:45 What impacts should we expect if it shuts down? 0:16:51 James Hansen says an AMOC shutdown may lead to “multi-meter” (10+ feet) sea level rise this century. Do you agree? 0:18:47 What can we do to try to prevent the AMOC from shutting down? 0:20:49 Can Sunlight Reflection Methods/Solar Radiation Management, ie, solar geoengineering, help prevent AMOC shutdown by refreezing Greenland and stopping fresh water inflow into the North Atlantic? 0:22:38 How should the threat of an AMOC collapse inform the discussion on climate action? 0:25:00 What AMOC questions will your next research paper try to answer? 0:26:51 Wrap up Peter Ditlevsen is a professor of the physics of ice, climate and the Earth at the Neils Bohr Institute at the University of Copenhagen. Peter's home page: https://nbi.ku.dk/english/staff/?pure... Link to Peter's paper on AMOC collapse: https://www.nature.com/articles/s4146... Great PBS explainer on the AMOC: https://youtu.be/f2evaLaDvCI?si=mXcVfmxQkF4w8wEC For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Will 2024 Be When We Find Out We Won’t Act On Climate?

Dan Miller and Leon Simons, hosts — Mon, 01 Jan 2024 03:03:46 -0500

In this Climate Chat episode we discuss whether the world will start to take climate action seriously in 2024. Guardian article on "World will look back at 2023 as year humanity exposed its inability to tackle climate crisis, scientists say": https://www.theguardian.com/environment/2023/dec/29/world-will-look-back-at-2023-as-year-humanity-exposed-its-inability-to-tackle-climate-crisis?CMP=share_btn_tw For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Chat: Discussion of Hansen Interview & Your Climate Questions

Dan Miller and Leon Simons, hosts — Mon, 25 Dec 2023 06:10:09 -0500

In this Climate Chat episode we discuss last week's interview with climate scientist Dr. James Hansen and discuss your climate questions and comments. Link to Climate Chat interview with James Hansen: https://youtube.com/live/8Ag3UVSrlhE Dr. Hansen's recent "Global Warming In the Pipeline" paper: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Dr. Hansen's 2016 paper: "Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 °C global warming could be dangerous" https://acp.copernicus.org/articles/16/3761/2016/ Dr. Hansen's home page: http://www.columbia.edu/~jeh1/ Dr. Hansen's 2012 TED talk: https://www.ted.com/talks/james_hansen_why_i_must_speak_out_about_climate_change?language=en White paper on Carbon Fee and Dividend that Dr. Hansen and I submitted to the US Congress: https://csas.earth.columbia.edu/sites/default/files/content/Fee-and-Dividend-Miller-Hansen-20191110-1.pdf For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Change: What to Know/What to Do with Climate Scientist JAMES HANSEN

Dan Miller and Leon Simons, hosts — Mon, 18 Dec 2023 03:29:18 -0500

In this Climate Chat episode I interview legendary climate scientist James Hansen. Dr. Hansen's recent "Global Warming In the Pipeline" paper: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Dr. Hansen's 2016 paper: "Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 °C global warming could be dangerous" https://acp.copernicus.org/articles/16/3761/2016/ Dr. Hansen's home page: http://www.columbia.edu/~jeh1/ Dr. Hansen's 2012 TED talk: https://www.ted.com/talks/james_hansen_why_i_must_speak_out_about_climate_change?language=en White paper on Carbon Fee and Dividend that Dr. Hansen and I submitted to the US Congress: https://csas.earth.columbia.edu/sites/default/files/content/Fee-and-Dividend-Miller-Hansen-20191110-1.pdf For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Change: What to Know/What to Do with Climate Scientist JAMES HANSEN

Dan Miller and Leon Simons, hosts — Mon, 18 Dec 2023 03:29:18 -0500

Is COP28 Being Serious About Climate Change?

Dan Miller and Leon Simons, hosts — Mon, 11 Dec 2023 03:42:22 -0500

In this Climate Chat episode we discuss the current COP28 meeting in the UAE and whether the conference is considering the latest climate science and whether special interests have too much influence in the proceedings. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Endgame: Exploring catastrophic climate change scenarios

Dan Miller and Leon Simons, hosts — Mon, 04 Dec 2023 02:46:21 -0500

In this Climate Chat episode we discuss the August 2022 paper "Climate Endgame: Exploring catastrophic climate change scenarios" by Luke Kemp, Chi Xu, Joanna Depledge , and Timothy M. Lenton: https://www.pnas.org/doi/10.1073/pnas.2108146119 The paper explores how the IPCC does not include proper risk assessment of catastrophic climate change scenarios and what proper risk assessment may reveal. For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Chat: The REAL Reasons We Aren't Reducing Emissions

Dan Miller and Leon Simons, hosts — Mon, 27 Nov 2023 03:02:21 -0500

In this Climate Chat episode we discuss the reasons that the world is not reducing emissions even though we are aware of the dangers of inaction and we understand the solutions we must implement. Much of the discussion revolves around climate scientist Kevin Anderson's response to a Guardian article, "Who are the polluter elite and how can we tackle carbon inequality?" https://www.theguardian.com/environment/2023/nov/22/who-are-polluter-elite-how-can-we-tackle-carbon-inequality?CMP=share_btn_tw Kevin's response: https://x.com/KevinClimate/status/1727671904725565909?s=20 We also cover the 2021 paper by Kevin and others that discuss the various societal elements that are preventing climate action: "Three Decades of Climate Mitigation: Why Haven't We Bent the Global Emissions Curve?" https://www.annualreviews.org/doi/full/10.1146/annurev-environ-012220-011104 For more Climate Chat episodes, see our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Joe Romm: Why DAC Isn't Scalable & Net Zero is a Dangerous Myth

Dan Miller and Leon Simons, hosts — Sun, 19 Nov 2023 15:24:44 -0500

Climate Chat host Dan Miller interviews climate communications host Joe Romm about his recent white paper, "Why direct air carbon capture and storage (DACCS) is not scalable and ‘net zero’ is a dangerous myth" Here is a link to the paper: https://bpb-us-w2.wpmucdn.com/web.sas.upenn.edu/dist/0/896/files/2023/11/DACCS5.0-11-8-23_RommJ.pdf Some of Joe's other recent writings can be accessed here: https://web.sas.upenn.edu/pcssm/publications/ Joe's home page is here: https://joeromm.wordpress.com See other Climate Chat interviews at our YouTube home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Chat: Hansen: How We Know that Global Warming is Accelerating

Dan Miller and Leon Simons, hosts — Mon, 13 Nov 2023 02:34:59 -0500

Climate Chat: Hansen: How We Know that Global Warming is Accelerating

Climate Chat: Hansen's New "Global Warming in the Pipeline" Paper

Dan Miller and Leon Simons, hosts — Mon, 06 Nov 2023 03:17:25 -0500

In this Climate Chat, we discuss James Hansen's new "Global Warming in the Pipeline" paper. In the paper, Hansen shows why the IPCC's Equilibrium Climate Sensitivity (ECS) is too low, and their estimates of aerosol cooling are also too low. This has profound consequences for our climate future. Link to Hansen's paper: https://academic.oup.com/oocc/article/3/1/kgad008/7335889 Link to YouTube video of Hansen and co-authors discussing the paper: https://www.youtube.com/watch?v=NXDWpBlPCY8 A link to my Tweet with a quick summary of the paper: https://x.com/danmiller999/status/1720012449875984598?s=20 See more Climate Chat videos on our home page: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Chat: 2023 Climate Report: Entering Uncharted Territory

Dan Miller and Leon Simons, hosts — Mon, 30 Oct 2023 04:33:06 -0400

This is the Climate Chat podcast for October 29, 2023. We discussed the recent paper titled "The 2023 state of the climate report: Entering uncharted territory" by William J Ripple, Christopher Wolf, Jillian W Gregg, Johan Rockström, Thomas M Newsome, Beverly E Law, Luiz Marques, Timothy M Lenton, Chi Xu, Saleemul Huq, Leon Simons, and Sir David Anthony King. Here is a link to the paper: https://academic.oup.com/bioscience/advance-article/doi/10.1093/biosci/biad080/7319571 Co-author Saleemul Huq died a few days ago. Co-author Leon Simons joined our discussion starting at 1:20:30. Join our Climate Chat discussions every Sunday at 10am Pacific (California) Time. See selected Climate Chat interviews and discussions at https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Climate Chat: Earth Stopped Getting Greener 20 Years Ago

Dan Miller and Leon Simons, hosts — Mon, 23 Oct 2023 03:54:08 -0400

Climate Chat podcast from October 22, 2023. Discussion is based on the following article and paper: https://www.scientificamerican.com/article/earth-stopped-getting-greener-20-years-ago/ https://www.science.org/doi/10.1126/sciadv.aax1396

Climate Chat: Earth Stopped Getting Greener 20 Years Ago

Dan Miller and Leon Simons, hosts — Mon, 23 Oct 2023 03:54:08 -0400

The Godfather of Carbon Capture: Klaus Lackner Interview

Dan Miller and Leon Simons, hosts — Sun, 12 Sep 2021 03:12:50 -0400

Dr. Klaus Lackner was one of the first scientists to explore how to remove excess CO2 from the atmosphere. In this wide-ranging masterclass interview, Klaus and host Dan Miller discuss the feasibility, scalability, safety, and cost of large-scale Direct Air Capture (DAC) and sequestration of atmospheric CO2. Klaus Lackner is the director of Center for Negative Carbon Emissions and a professor in the School of Sustainable Engineering and the Built Environment of the Ira A. Fulton Schools of Engineering at Arizona State University. Link to Klaus' homepage: https://globalfutures.asu.edu/cnce/profile/kslackne/ Link to Climate Chat Club YouTube homepage: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg Timestamps: 00:00:00 Introduction 00:00:50 Start of Interview 00:02:16 Klaus' background/Why carbon capture? 00:06:03 Moisture-swing carbon capture 00:09:18 Does carbon capture use too much energy? 00:10:51 Is there room underground for all our CO2? 00:12:53 Iceland 00:16:18 Other CO2 storage techniques including saline aquifers 00:19:09 Markets for CO2 00:20:07 Incentives to capture CO2 00:22:20 CO2-to-fuels 00:26:05 Two markets for air capture 00:26:45 1 part per million = 15 gigatons of CO2 00:27:26 Is carbon capture real? 00:28:59 Getting down to $50/ton 00:34:07 Is carbon capture environmentally safe? 00:36:51 The scale needed 00:38:58 $2 trillion/year for 40 gigatons/year 00:41:54 Is carbon capture a moral hazard? 00:46:19 "Natural" CO2 capture including planting trees 00:52:04 Beginning of Audience Q&A 00:52:16 CO2 into cement 00:54:14 What to do now to scale CO2 capture? 00:57:48 Area needed for natural CO2 capture using micro-algae 01:02:00 What are "Mechanical Trees"? 01:06:32 How to support scaling of CO2 capture 01:12:24 Impacts on oxygen and soils 01:16:09 What about ocean capture of CO2? 01:19:48 Embodied carbon and energy in CO2 capture systems 01:30:31 CO2 capture from air vs. ocean 01:33:29 CO2 capture prizes 01:35:22 Biomass solutions 01:41:42 How to convince people opposed to carbon capture? 01:45:03 Summing up 01:47:17 Out-tro 01:47:29 END

From Tetris to Energy Transition: Henk Rogers Interview (Audio Only)

Dan Miller and Leon Simons, hosts — Sun, 27 Jun 2021 12:21:50 -0400

Gaming legend Henk Rogers discusses his efforts to move the world to clean energy. Henk's Blue Planet Foundation: https://blueplanetfoundation.org More Climate Chat Club interviews: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg Time Stamps: 00:00:00 Introduction 00:00:56 Henk's Background 00:06:26 Hawaii's Energy Situation 00:10:26 Moving Hawaii on Energy 00:16:35 Training Climate Activists 00:18:24 Energy Storage 00:23:40 Action Beyond Hawaii 00:27:06 Gameifying Climate Action 00:35:14 Movie About Henk Audience Q&A 00:38:44 Reaching people 00:45:49 Transportation 00:52:48 Rewards / Homebrew Storage? 01:01:03 Hydrogen for Ships 01:05:27 Hope vs. Sink or Swim 01:08:38 Wind Power 01:13:39 Earth Day 01:14:52 Food 01:21:18 Burning Man 01:24:55 Hydrogen vs. Batteries 01:32:10 Conclusions 01:34:28 Out-tro

Kevin Anderson Climate Chat Interview: Going Beyond Dangerous - Part 2 (Audio Only)

Dan Miller and Leon Simons, hosts — Fri, 11 Jun 2021 12:49:48 -0400

Part 2 of interview with Climate Scientist Kevin Anderson who provides a straight-talk & sobering view of our climate situation. During this audience Q&A section of the interview, Kevin covers a wide range of issues including de-growth, carbon pricing, and geo-engineering. See subject time stamps below. Listen to gain insight into the "radical future" that is ahead of us. Part 1: https://youtu.be/WQCofG9Urr4 Kevin's homepage: http://kevinanderson.info Warning: This interview presents what some may consider to be a scary view of our future. Do not listen if you feel you may have trouble dealing with the information discussed. Time Stamps: 00:00:00 Introduction 00:01:13 De-Growth 00:08:39 Can Governments Act? 00:14:52 Behavior vs. Technology 00:21:25 Carbon Pricing 00:25:48 Social Surprises 00:39:19 Bill Gates 00:31:51 If We Were Serious 00:36:17 Net-Zero is a Trap 00:41:45 Adaption 00:50:22 COVID Lessons 00:54:45 COP26 00:57:47 Hurricanes/Infrastructure 01:03:21 Commitments 01:09:34 Geo-engineering 01:14:34 Agriculture 01:20:50 Planting Trees 01:23:28 What To Do Now 01:26:44 High Emitters 01:31:45 Final Thoughts 01:36:58 Out-tro Some quotes from Part 2: 00:34:38 “Top 1% of emitters globally have emissions that are twice as high as the bottom 50% of the global population.” 01:05:46 “Climate change is not an end point problem. Climate change is about the accumulation of emissions. And so what you do or don’t do in year 1, 2 and 3 will have massive repercussions on what you need to do by Year 5, 6, 7, 8, 9 and 10.” This interview was originally conducted live on the Climate Chat Club on the social platform Clubhouse. Join the club via the following link: https://www.clubhouse.com/club/climate-chat

George Marshall Climate Chat Interview: Why Our Brains Are Wired to Ignore Climate Change

Dan Miller and Leon Simons, hosts — Thu, 03 Jun 2021 12:59:23 -0400

Climate communications expert & author George Marshall discusses how to effectively communicate about climate change to the broad public. George is the author of "DON’T EVEN THINK ABOUT IT: Why Our Brains Are Wired to Ignore Climate Change" and is the Founding Director of ClimateOutreach.org. Time Stamps: 00:00:00 Introduction 00:00:00 Welcome 00:02:27 George's background 00:05:57 Threat indicators 00:09:22 Fitting into a group 00:12:51 People impacted by climate change 00:20:59 What religion teaches us about climate communications 00:27:15 Hitting people with data 00:30:12 How climate change became your fault 00:35:41 Government support of climate communications Audience Q&A: 00:42:55 Should we shout? 00:51:17 Environmentalists are freaks - How to reach others 00:57:07 Using our other senses 01:02:46 Negative vs. positive messages 01:07:48 Messaging to people's values 01:17:33 Narratives for the COVID crisis 01:24:53 Flight vs. Fight: How to stop people from being overwhelmed 01:27:48 When sustainability fails 01:31:01 Wrap up 01:32:57 Out-tro Climate Chat Club on YouTube: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg Climate Chat Club on Clubhouse: https://www.clubhouse.com/club/climate-chat

$100K/ton!?! - The Ultimate Cost of Carbon. David Archer Interview (Audio Only)

Dan Miller and Leon Simons, hosts — Sun, 30 May 2021 18:20:55 -0400

Climate scientist David Archer of the University of Chicago discusses his research on the Ultimate Cost of Carbon (UCC): The climate impacts of release CO2 if the negative effects are not discounted. He also discusses the *very* long term impacts that our emissions of CO2 have on the climate (~500,000 years!). David's UCC paper can be accessed here: https://link.springer.com/article/10.1007/s10584-020-02785-4 David's homepage is https://geosci.uchicago.edu/people/david-archer/ Time Stamps: 00:00:00 Welcome 00:01:12 "Deep Time" carbon cycles 00:06:08 The Ultimate Cost of Carbon (UCC) 00:08:29 UCC vs. Social Cost of Carbon 00:09:46 How UCC is calculated 00:12:58 UCC time scale 00:14:28 UCC model assumptions & parameters 00:24:30 Long time for temperature to settle 00:27:07 70m/230ft of sea level rise 00:28:15 Game over scenarios? 00:29:22 Best case & conservative models 00:30:05 1 gallon of gasoline = 1 atomic bomb of warming! 00:35:22 Cost of cleaning up carbon Audience Q&A: 00:41:21 Shorter time frames & UCC of air travel 00:47:43 How to communicate about climate & the long-term view 00:51:04 "The Long Thaw": How long CO2 effects last 00:55:43 Ocean uptake of CO2 01:02:00 Climate restoration/carbon removal/geo-engineering 01:07:38 David's current research: Paleoclimate ocean processes 01:09:09 Why ocean carbon capture doesn't work 01:10:52 Ocean pollution/biological pump/ice sheet feedbacks 01:13:55 Accounting for permafrost emissions 01:15:21 Wrap up For more Climate Chat Club interviews, visit our YouTube channel: https://www.youtube.com/channel/UC3BXcpYFCzTndJ9Fisi32qg

Robert Howarth Climate Chat Interview - Is Natural Gas Worse Than Coal for Climate?

Dan Miller and Leon Simons, hosts — Wed, 26 May 2021 23:29:37 -0400

Robert Howarth is Professor of Ecology & Environmental Biology at Cornell University. He is an expert on natural gas & methane and their impact on the climate. In this wide-ranging interview, Prof. Howarth discusses how methane's powerful warming capability (87X more effective than CO2 in warming the world over a 20-year period) and its high leakage rate from the extraction, transportation, and utilization processes makes it about as bad as coal when it comes to short-terms global warming. Prof. Howarth's information page is: www.HowarthLab.org This interview was originally conducted live on the Climate Chat Club on the social platform Clubhouse. Join the club via the following link: https://www.clubhouse.com/club/climate-chat

Kevin Anderson Climate Chat Interview: Going Beyond Dangerous - Part 1 (Audio Only)

Dan Miller and Leon Simons, hosts — Sun, 23 May 2021 15:24:24 -0400

Climate Scientist Kevin Anderson provides a straight-talk & sobering view of our climate situation. How can we stay under 1.5/2ºC warming? What is the role of carbon capture? What does 4ºC warming mean? Have we reached a tipping point in public engagement? How should we think about Earth system feedbacks? Listen to gain insight into the "radical future" that is ahead of us. Part 2 is here: https://youtu.be/iiE5A78jzOg Kevin's homepage: http://kevinanderson.info Warning: This interview presents what some may consider to be a scary view of our future. Do not listen if you feel you may have trouble dealing with the information discussed. Timestamps: 00:00:00 Introduction 00:00:57 Kevin’s Background 00:06:31 1.5/2ºC Targets 00:12:19 “Net-Zero” by 2029! 00:20:30 Public Tipping Point 00:25:34 Staying under 2ºC 00:32:31 What Does 4ºC Mean? 00:38:42 Carbon Capture (CDR) 00:48:22 Feedbacks 00:52:52 Out-tro This interview was originally conducted live on the Climate Chat Club on the social platform Clubhouse. Join the club via the following link: https://www.joinclubhouse.com/club/climate-chat

Kevin Anderson Climate Chat Interview: Going Beyond Dangerous - Part 1 (Audio Only)

Dan Miller and Leon Simons, hosts — Sun, 23 May 2021 15:24:24 -0400