Podcast · Tech & Science

Climate Chat

by Dan Miller and Leon Simons, hosts · English · Tech & Science

Climate Chat is a channel where we discuss all things climate with scientists, technologists, authors, advocates, communicators and others helping us understand and fight climate change.

New episodes: Weekly
Typical length: 1 hr 15 min
Latest: 11 Oct 2026
Language: English

Latest episode

11 Oct 2026 · 1 hr 3 minNew

Cool, Reduce, Remove: The Emergency Blueprint to Restore the Climate with Dennis Garrity

In this Climate Chat episode, we interview the Chair of the Heathy Planet Action Coalition (HPAC) on the organizations plans and actions to restore the climate through "Cooling" (Sunlight Reflection Methods or SRM), "Reduce" (emission reduction) and "Remove" (Carbon Dioxide Removal or CDR). Dr. Dennis Garrity is a systems agronomist and research leader whose career has focused on improving small-scale farming systems in the tropics. He has been serving as Drylands Ambassador for the UN Convention to Combat Desertification, emphasizing the role of agroforestry, evergreen agriculture and…

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Earlier episodes 29 most recent

30 Sep 2026 · 1 hr 54 min
Debunking the Myths: Why Carbon Removal Can Scale with Klaus Lackner
In this Climate Chat episode, we interview climate scientist Klaus Lackner on the myths surrounding Carbon Dioxide Removal (CDR, a.k.a, carbon capture) and how CDR can scale massively if the proper policies are put in place. Dr. Klaus Lackner is a former professor in the School of Sustainable Engineering and the Built Environment and the founding director of the Center for Negative Carbon Emissions at Arizona State University. A pioneer in carbon management, Lackner was the first scientist to propose direct air capture—capturing carbon dioxide directly from the ambient atmosphere—as a viable…
26 Sep 2026 · 1 hr 44 min
What They Don’t Tell You About NY Climate Week
In this Climate Chat episode, Climate Chat host Dan Miller discusses what he learned at this year's NYC Climate Week, a yearly set of hundreds of events centered on climate change solutions. Links to items mentioned in the program: NYC Climate Page main site: https://www.climateweeknyc.org The Degrees Initiative: https://degrees.ngo Headline Newds/Yellow Dot Studios: https://yellowdotstudios.com/headlinenewds/ Healthy Planet Action Coalition – HPAC: https://healthyplanetaction.org Daily Show segment on SRM: https://youtu.be/r8_A7BkeuCY Please Like and Subscribe! Listen to Climate Chat on…
20 Sep 2026 · 1 hr 40 min
Is Solar-Geoengineering Too Risky? with Chris Parker
In this Climate Chat episode, we interview interview climate scientist Chris Parker about climate change risks and have a discussion on the risks of doing solar-geoengineering (a.k.a, Sunlight Reflection Methods or Solar Radiation Management (SRM)) vs. the risks of not doing it. Chris Parker is a climate scientist and hydrologist specialising in translating global and UK climate projection data into practical risk assessments for government, regulators, and infrastructure providers. He was formerly Climate and Data Lead for the UK's Fourth Climate Change Risk Assessment – Independent…
12 Sep 2026 · 1 hr 17 min
The Enigma of Climate Inaction with Frédéric Samama
In this Climate Chat episode, we interview author Frédéric Samama about his new book "The Enigma of Climate Inaction." The book explores humanity’s perplexing passivity in the face of the looming climate crisis―despite our having known about it for decades, the fact that we brought it into existence, and the existential threat it poses to our species. We will be discussing and comparing Frédéric's theory of "societal bubbles" with host Dan Miller's theory of limits of human cognition to deal with long-term problems, which Dan covered in his "Barriers to Climate Action" Climate Chat program.…
6 Sep 2026 · 1 hr 16 min
The Gargantuan Climate Lie with Adam McKay
In this Climate Chat episode, we interview Adam McKay about his recent essay in Current Affairs magazine titled "The Gargantuan Lie That is Collapsing The World’s Climate". Adam is a screenwriter, producer, and director known for "Don't Look Up", "The Big Short", "Vice", "Anchorman", and "Succession", among many, many other films and TV shows. Adam was head writer for Saturday Night Live from 1995 to 2001. In 2023, Adam founded Yellow Dot Studios, a non-profit production company that makes content that raises awareness and mobilizes action on the climate emergency. Link to Adam's Current…
29 Aug 2026 · 1 hr 33 min
Global Heat, Nepal Flash Flood & More
In this Climate Chat episode, hosts Dan Miller and Leon Simons discuss recent climate news including record ocean temperatures, the latest Earth Energy Imbalance (EEI) data, and the climate-induced flash flood in Nepal. 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…
23 Aug 2026 · 1 hr 45 min
Are Doomers Really the Bad Guys? with Eliot Jacobson
In this Climate Chat episode, we interview returning guest Prof. Eliot Jacobson about his response to a recent paper claiming "doomerism" is harmful and suggesting people can be "inoculated" from "doomer" messages. Prof. Jacobson responded on his Substack blog with an article titled "The Fundamental Theorem of Doomism". Dr. Eliot Jacobson is a retired academic, former casino gaming consultant, and prominent climate science commentator. He earned his Ph.D. in mathematics from the University of Arizona in 1983 and spent over two decades in academia, serving as a mathematics professor at Ohio…
14 Aug 2026 · 10 min
Does AMOC Collapse Depend on Rate of Warming? with René van Westen
In this Climate Chat episode, we interview returning guest René van Westen on his latest Atlantic Meridional Overturning Circulation (AMOC) research that shows that AMOC collapse depends not on the amount of warming but rather the *rate* of warming. Dr. Westen is a postdoctoral researcher at Utrecht University in the Netherlands. Article on René's recent research: https://www.uu.nl/en/news/rate-of-climate-change-affects-stability-of-the-amoc René's recent research article: Failure to track a stable AMOC state under rapid climate change https://www.nature.com/articles/s41558-026-02730-w…
10 Aug 2026 · 1 hr 10 min
The Biology of Collapse with George Tsakraklides
In this Climate Chat episode, we interview scientist, activist and author George Tsakraklides about his book, The Biology of Collapse. George Tsakraklides is an author, Substack writer, and interdisciplinary commentator with an educational background spanning molecular biology, chemistry, food sciences, and Earth sciences, alongside two decades of experience in corporate data analytics and marketing. He has authored numerous works of non-fiction, fiction, and poetry—including The Biology of Collapse: Lessons from Nature on Growth, Power, Extinction and Rebirth, Beyond the Petri Dish, The…
1 Aug 2026 · 1 hr 46 min
Just the Beginning: Global Heat & Local Extremes with Leon Simons & Dan Miller
In this Climate Chat episode, hosts Leon Simons and Dan Miller discuss the recent acceleration in warming and the resulting extreme weather in Europe and elsewhere. We will also discuss James Hansen's recent communication about the role of the current El Niño vs. climate sensitivity in the upcoming record global temperatures. 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…
26 Jul 2026 · 58 min
The Physics & Economics of Sea Level Rise with Robert Kopp
In this Climate Chat episode, host Dan Miller interviews climate scientist Dr. Robert Kopp about sea level rise predictions and the economic impacts of sea level rise. Robert Kopp is a climate scientist who serves at Rutgers University as a Distinguished Professor in the Department of Earth & Planetary Sciences. Professor Kopp’s research focuses on past and future sea-level change, the interactions between physical climate change and the economy, the use of climate risk information to inform decision-making, and the role of higher education in supporting societal climate risk management. He…
19 Jul 2026 · 50 min
"Uncharted Territory!": The Upcoming Super El Niño with Jeff Berardelli
In this Climate Chat episode, host Dan Miller interviews WFLA Chief Meteorologist and Climate Specialist Jeff Berardelli about climate change, climate communications, and the upcoming super-strong El Niño. Jeff Berardelli is the Chief Meteorologist and Climate Specialist at WFLA-TV (NBC) in Tampa, Florida, and a highly regarded national voice in climate communication. Over a 25-year broadcast career—which includes serving as a national meteorologist for CBS News—he has specialized in bridging the gap between daily local weather forecasting and the broader physics of global climate change.…
10 Jul 2026 · 1 hr 2 min
What Happens to Our Food Supply When We Dim the Sun? with Brendan Clark
In this Climate Chat episode, host Dan Miller interviews Cornell atmospheric climate scientist Brendan Clark about his research on how Sunlight Reflection Methods (SRM, a.k.a., solar geoengineering) will impact vegetation growth and agriculture. We will also discuss Brendan's recent paper on how global warming induced changes to vapor pressure deficit (VPD) is slowing the growth of trees and reducing an important carbon sink. Dr. Brendan Clark is an atmospheric scientist and Postdoctoral Research Associate at Cornell University who specializes in modeling climate intervention scenarios,…
5 Jul 2026 · 49 min
Ten Major Misconceptions About Climate Change
In this Climate Chat episode, host Dan Miller discusses 10 major misconceptions about climate change held by people involved in climate action. This is not about climate denial myths, but rather about "conventional wisdom" that turns out to be wrong. 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…
28 Jun 2026 · 1 hr 12 min
Methane Eradication: Matthew Johnson's Radical Chemistry
In this Climate Chat episode, host Dan Miller interviews atmospheric scientist Dr. Matthew S. Johnson on his critical work to find ways to eradicate methane from point sources such as a cow barn, as well as from the atmosphere. Matthew S. Johnson, PhD is a Professor of Chemistry at the University of Copenhagen. He has a Bachelor in Chemistry from Macalester College in St. Paul Minnesota and a PhD in Physical Chemistry from the California Institute of Technology for work on laser spectroscopy of solvated ions in a molecular beam. He received a Fulbright Fellowship to work at the MAX-Lab…
20 Jun 2026
I Met These Climate Start-ups—Here’s What They’re Building
In this Climate Chat episode, host Dan Miller reviews a number of climate tech start-up companies that he met at the recent Venture Summit West conference in Mountain View, California. Links to the start-up companies mentioned in the episode: Green Gravity: https://greengravity.com RISE Robotics: https://riserobotics.com Element Zero: https://elementzero.green/ ADAR Plus: https://www.adartech.com/ Volexion: https://www.volexion-inc.com/ Aeromutable: https://www.aeromutable.com Renu Robotics: https://renurobotics.com NEG (Non-Ergodic Generator): https://www.institut-kurz.com/NEG/ Please Like…
12 Jun 2026 · 1 hr 1 min
Students Fighting To Force Polluters to Pay: Carbon Fee & Dividend w/ Katharine Gage
In this Climate Chat episode, host Dan Miller Katharine Gage, a climate activist working to get students to rally around the Carbon Fee and Dividend (CFD) carbon pricing policy. Katharine Gage graduated from Bowdoin College with a major in Earth and Oceanographic Science and a minor in Psychology. Her academic work included research in oceanography and biogeochemistry. She has been leading climate advocacy efforts since 8th grade, and now co-leads the Carbon Fee and Dividend Movement and recently gave a TEDx Talk about this effort. Her interest in policymaking also led to two internships in…
6 Jun 2026
Ask Us Anything #3 with Climate Chat Hosts Dan Miller & Leon Simons
In this Climate Chat episode, hosts Dan Miller and Leon Simons discuss the latest climate news and any audience questions. You can post questions in the live YouTube or LinkedIn chat or post them in the program announcement threads on Twitter/X or Bluesky. 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…
28 May 2026 · 1 hr 50 min
Can Technology Fix the Climate? with Adam Dorr
In this Climate Chat episode, host Dan Miller interviews author and RethinkX's Director of Research, Adam Dorr, about his two books, Brighter, and The Degrowth Delusion. RethinkX is a think tank that focuses on disruptive technologies including renewable energy and precision fermentation. Adam argues renewable energy will dominate future energy supply and that "degrowth" will not provide us with the resources to fight climate change. Adam Dorr is an environmental social scientist, technology theorist, and author. As Director of Research at RethinkX, he leads analysis and forecasting of…
23 May 2026 · 1 hr 9 min
Throwing Shade at Global Warming: Risks & Reality of Planetary Sunshades with Ross Centers
In this Climate Chat episode, host Dan Miller interviews Planetary Sunshade Institute's Board Member and former Executive Director, Ross Centers, on the science, risks, and reality of using giant space-based sunshades located between the Sun and the Earth to reduce global warming. Ross Centers is an American planetary geologist, space entrepreneur, and climate advocate. He is the Co-Founder and CEO of Ethos Space, a lunar infrastructure startup. Based in Los Angeles, California, Centers has positioned himself at the intersection of commercial space resource utilization (SRU) and space-based…
15 May 2026 · 1 hr 5 min
The White House Scientist Scaling Climate Solutions feat. Phil Duffy
In this Climate Chat episode, host Dan Miller interviews Phil Duffy, Chief Scientist for Spark Climate Solutions and former Climate Science Advisor for President Biden. We will discuss Phil's White House experience as well as his current role at Spark Climate Solutions addressing unsolved climate challenges. Dr. Phil Duffy is a scientist who is dedicated to understanding and managing the human consequences of climate change, Phil most recently served in the White House Office of Science and Technology Policy, where he helped to inform and implement the President’s climate agenda. Prior to…
8 May 2026 · 1 hr 26 min
New Global Emissions Projections: Scrapping the Highs & Lows with Detlef van Vuuren
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…
2 May 2026 · 1 hr 28 min
Biochar Carbon Removal: Finally Ready for Primetime? with Alan Ransil
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…
27 Apr 2026 · 1 hr 15 min
Climate Blind Spots: Why SF Climate Week Worried Me
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…
16 Apr 2026 · 1 hr 19 min
Current Events: Are We Hitting the AMOC Tipping Point? with AMOC Scientist René van Westen
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:…
13 Apr 2026 · 1 hr 44 min
Can We Reflect the Sun & Cool the Earth? with SRM Scientist Doug MacMartin
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…
6 Apr 2026 · 57 min
The Iran War Climate Paradox Explained
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…
30 Mar 2026 · 1 hr 13 min
3 Million Year Climate Secrets: What the Past Teaches Us
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…
23 Mar 2026 · 1 hr 13 min
Seaforestation Can Reverse Climate Change with Brian von Herzen
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…

About Climate Chat

Climate Chat is a channel where we discuss all things climate with scientists, technologists, authors, advocates, communicators and others helping us understand and fight climate change.

Climate Chat is a English tech & science podcast from Dan Miller and Leon Simons, hosts. Melo plays each episode straight from the publisher's own feed — no ads added, no account needed — and remembers where you stopped, in this browser only.

Publisher: Dan Miller and Leon Simons, hosts
Language: English
Category: Tech & Science
New episodes: Weekly
Typical length: 1 hr 15 min
Latest episode: 11 Oct 2026
Feed: RSS — paste into any podcast app
Apple Podcasts: podcasts.apple.com/podcast/id1893162516

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