Climate Reflections dives into the world of sunlight reflection methods, also known as solar geoengineering: a set of ideas to reflect a small amount of sunlight back to space to help counteract global warming. This may sound like science fiction, but it’s an idea that scientists really are studying.
Join podcast host Peter Irvine, a sunlight reflection scientist, to explore what different ideas are being studied to reflect sunlight, what impact they might have, and what is going on in the world today related to sunlight reflection research.
Making sense of calls for bans and moratoria for solar geoengineering
Industry experts Josh Horton, Julie Vinders, Joe Sonka, and Craig Segall explore the complex debate around bans and moratoria on solar geoengineering, weighing the pros and cons of each approach in this interview.
3 Jun 2025
Field Experiments in SRM
This episode explores the history and challenges surrounding Solar Radiation Management (SRM) field experiments, highlighting the balance between scientific advancement and public perception.
14 May 2025
Live Podcast: SRM and Africa - perspectives from the continent
Africa is home to many of the world’s least developed nations and its population is rapidly growing, making it one of the most climate vulnerable regions in the world. As such, Africa has much to gain, or lose, from the potential deployment of SRM. SRM360 hosts a live panel discussion at the Degrees 2025 Global Forum in South Africa with leading African experts about the future of Africa, the climate outlook, and the potential and risks of SRM for the continent. Moderator: Pete Irvine (SRM360...
6 May 2025
What is Marine Cloud Brightening (MCB)?
In this episode of Climate Reflections: The SRM360 Podcast, host Dr. Pete Irvine discusses the sunlight reflection method (SRM) known as Marine Cloud Brightening (MCB), which involves spraying sea salt particles below the cloud base to brighten clouds and reflect sunlight. The episode explores two different MCB field experiments by scientists, and discusses the technical, scientific, and ethical challenges of MCB. Joining us to explain Marine Cloud Brightening are experts Dr. Isabelle S...
15 Apr 2025
News Roundup: major reports on SRM from Germany and the US, how to assess risk, and how emotions impact SRM opinions
To discuss SRM news over the past month, we're joined by Chad Baum, behavioral scientist and Assistant Professor at Aarhus University in Denmark, and Julie Vinders, Lawyer and Senior Research Analyst at Trilateral Research in the UK. We'll talk through the German Environmental Agency's recent policy report on SRM, as well as the Council on Foreign Relations' Climate Realism Initiative, that considers SRM as one of many interventions to "avert catastrophic global climate change". We'll also di...
1 Apr 2025
Air Pollution and SRM
Modern efforts to clean up air pollution started in the 1950s following the London Smog event, which killed nearly 12,000 people. Much of that pollution was caused by sulphate aerosols. The health and environmental impacts of sulphate pollution were well understood by the 2000s, but another impact was becoming increasingly clear: sulphate aerosols reflected incoming solar radiation, preventing some global warming. The realization that clean air legislation was contributing, in part, to global...
18 Mar 2025
News Roundup: the next IPCC report, alternative aerosol particles, and more
In a contentious meeting in late February, the IPCC agreed on outlines that include discussions of SRM for its 7th assessment report. For the first time in IPCC history, the US was notably absent, having been banned from participation by the Trump administration. Meanwhile, Raymond Pierrehumbert and Michael Mann, two prominent climate scientists and critics of SRM argue that the UK government should pull the plug on their Advanced Research and Invention Agency - or Aria - which was crea...
4 Mar 2025
SRM Governance with Cynthia Scharf
Cynthia Scharf has spoken with senior policy makers, UN officials, think tanks and NGOs across the world about climate change and sunlight reflection methods (SRM). Eight years ago, when she first began having these discussions, most people did not see SRM as a serious issue with implications for every country in the world. Now, they are interested. But as interest grows, the gap between the research community and policymakers' knowledge has also grown. Join our exclusive conversation with Cy...
18 Feb 2025
News Roundup: James Hansen and SRM, Arctic Ice Project Shuts Down, New MCB Studies, and More
What we'll cover: At the end of January, the Arctic Ice Project - formerly Ice 911 - announced they were shutting down. Why? A new study came out this month that draws on focus groups and a survey across 22 countries asking the public who they trust when it comes to information about carbon dioxide removal and SRM. What were the findings?A new literature review identifies research gaps across the field of SRM.Thoughts on a recent paper about SRM transparency problems.A discussion of a re...
4 Feb 2025
The Geopolitics of SRM
Climate change will disrupt the geopolitical landscape. So will Sunlight Reflection Methods (SRM). But might SRM help reduce international tensions by reducing the impacts of climate change? Or will these methods cause more or worse disruptions? For this episode of Climate Reflections, host Pete Irvine speaks with geopolitical experts to explore the current geopolitical landscape and how SRM might interact with it to impact international relations. Guests: Olaf Corry, Professor of Global Secu...
21 Jan 2025
News Roundup: Hottest Year, SRM Under Trump, International SRM Discussions, And More
2024 was the hottest year on record. Could that change how policymakers think about SRM? How might the new administration in the US approach SRM? Do experts think countries will effectively develop international SRM regulations? We discuss a recent paper examining the topic, and find that the outlook is not optimistic. We also discuss another recent study which found that although SAI would cause some deaths, implementing SAI could still save hundreds of thousands of lives for every 1 degree ...
14 Jan 2025
What is Stratospheric Aerosol Injection (SAI)?
On June 15th, 1991, the densely populated island of Luzon in the Philippines awoke to an explosion that would turn out to be the second largest volcanic eruption of the 20th century. Mount Pinatubo had erupted, releasing a huge cloud of volcanic ash, hundreds of kilometers across and 40 kilometers high. As satellites tracked the ash cloud spread around the globe several times over, atmospheric scientists noted that over the next year, the Earth's global temperature had decreased by as mu...
17 Dec 2024
News Roundup: Live from the American Geophysical Union
Host Pete Irvine is joined by SRM researchers Lili Xia, Chris Lennard, and Tyler Felgenhauer for a live recording from the American Geophysical Union conference in Washington D.C. They discuss the latest SRM news including: the New York Times article on U.S. efforts to develop an early warning system to detect SRM deployment; Florida senator Ileana Garcia's bill to ban all "weather modification" activities; takeaways from the UNFCCC COP related to SRM; the latest research on the impacts of SA...
26 Nov 2024
News Roundup: History of SRM
For this first News Roundup episode of Climate Reflections, we look back over the entire history of SRM and ahead to its future. For this, we are joined by 4 great guests with extensive experience working on this topic: Inés Camilloni, a Professor at the Department of Atmospheric and Ocean Sciences of the University of Buenos Aires and a Vice-Chair of the Intergovernmental panel on climate change’s working group on physical science. Govindasamy Bala, a Professor at the Centre for A...
26 Nov 2024
What is SRM? Who is studying it and why?
In our first themed episode of the Climate Reflections podcast, we present many different viewpoints from around the world on the role and risks of sunlight reflection methods (SRM) - proposals to reflect some of the sun's light back to space in order to cool the planet. Climate Reflections is a production of SRM360, a non-profit knowledge hub supporting an informed, evidence-based discussion of sunlight reflection methods. For more information and the latest research on SRM, visit SRM3...
15 Nov 2024
An Introduction to Climate Reflections
Climate Reflections: An SRM360 podcast explores the science, ethics, and our current understanding of Sunlight Reflection Methods (SRM), also known as solar radiation modification, or solar geo-engineering. SRM are a set of methods being researched to reflect some sunlight back to space in order to cool the planet. This podcast will present the views of a wide range of experts working in this field and explore what we know, what we don't know, and the issues SRM raises. We’ll have two ...
Who has been a guest on Climate Reflections: The SRM360 Podcast
Names identified in recent episode analyses. Showing up to five guests.
Josh Horton
Julie Vinders
Joe Sonka
Craig Segall
Reach and audience
Public platform figures. Ratings count people who left a rating, not total listeners.
YouTube views
4,200
Score snapshot 15 Sept 2025
Apple Podcasts (US)
5.0 / 5
4 ratings
Spotify
5.0 / 5
4 ratings
Podcast Authority Score: 28 / 100
A composite of feed quality, social presence, YouTube performance and engagement. Read the methodology.
Quality
16
Social presence
0
YouTube
68
Engagement
32
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