Climate Chat

In this Climate Chat episode, hosts Leon Simons and Dan Miller interview climate scientist Detlef van Vuuren about his recent paper where he lays our new "emissions scenarios" that will be used by the IPCC to predict future global warming. Since future temperatures depend on our future greenhouse gas emissions, scientists need to use emission scenarios to predict future temperatures. Past scenarios included what some scientists felt were beyond the possible worst case emissions, as well as scenarios that assumed much less emissions than currently seems feasible. Detlef and his colleagues has set forth a set of scenarios that fall in the middle of past approaches. Detlef van Vuuren is a senior researcher at PBL Netherlands Environmental Assessment Agency and a professor in Integrated Assessment of Global Environmental Change at the Faculty of Geosciences, Utrecht University. Leading the IMAGE integrated assessment modelling team, his research concentrates on using model-based scenarios to identify response strategies to global environmental problems. He is a member of several international scientific commissions, including the Integrated Assessment Modelling Consortium, the Global Carbon Project and the Earth Commission. Detlef van Vuuren had a coordinating role in developing the Representative Concentration Pathways and Shared Socio-economic Pathways now used in the IPCC’s assessments. He has participated as (coordinating) lead author in various assessments such as the Millennium Ecosystem Assessment, UNEP’s Global Environmental Outlook and various IPCC reports. Detlef van Vuuren has published more than 430 articles in refereed journals. Based on his work, Reuters listed him 2021 as the 4th most influential climate scientist worldwide. Detlef's article on the new CMIP7 emissions scenarios: https://gmd.copernicus.org/articles/19/2627/2026/ 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

In this Climate Chat episode, host Dan Miller interview Devonian Systems co-founder and CEO Alan Ransil about their approach to producing biochar. Biochar is produced when biomass is burned without the presence of oxygen, a process know as pyrolysis. Wood treated this way is also known as charcoal. Biochar is a very stable form of carbon and, therefore, it is a way to sequester CO2 from the atmosphere. While biochar has been produced for thousands of years, it is yet to scale up to a major climate solution. Devonian systems hopes to change that. Dr. Alan Ransil is the co-founder and CEO of Devonian Systems. He studied energy storage materials at MIT where he received his PhD in 2018, and has worked on projects for the MIT Energy Initiative, ARPA-E, and DARPA. He started Filecoin Green, a sustainability initiative for the world’s largest decentralized storage network. He is an advisor to the Global Carbon Reward project, and for the Commons.Earth event series. Follow Alan on LinkedIn: linkedin.com/in/alan-ransil-53573873 Devonian Systems website: https://devonian.ai Follow Devonian Systems on Bluesky: @devoniansystems.bsky.social 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

In this Climate Chat episode, host Dan Miller talks about what he learned at San Francisco Climate Week and what worried him about optimism bias and the lack of appreciation of accelerated warming and tipping points. He will also discuss some optimistic signs of awareness and solutions. 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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