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TOP 10 SRM UPDATES FROM JUNE 2026
Latin American and Caribbean Lawmakers Adopts Declaration on Regional SRM Governance
Following a science-policy dialogue co-hosted by Degrees Initiative and the Emmett Institute on Climate Change & the Environment at the University of California, Los Angeles (UCLA), the Latin American and Caribbean Parliament (PARLATINO) adopted a declaration recognizing the importance of solar radiation management for the region while emphasizing that decisions should be guided by scientific evidence, multilateral governance, and caution regarding risks and uncertainties.
The declaration also tasks PARLATINO’s Environment and Tourism Commission with organizing expert forums and drafting a Regional Framework Law on Climate Change Governance with specific provisions on geoengineering, providing a model for future national legislation across the region.
Degrees Initiative Awards Seven SRM Expansion Grants
The Degrees Initiative has awarded seven 30-month Expansion Grants worth up to £200,000 (≈US$270,000) each to strengthen Global South expertise in solar geoengineering. Building on earlier modelling grants, the funding will support researchers in Africa, Asia, and Latin America to expand scientific capacity, mentor early-career researchers, and generate regionally relevant evidence to inform future climate policy and governance.
Request for Proposals on SRM Impacts in Sub-Saharan Africa
Launched by the University of Exeter in partnership with the Advanced Research + Invention Agency (ARIA), a new call invites proposals for up to £70,000 to study how solar radiation modification could affect communities and regional climates across Sub-Saharan Africa.
The programme focuses on modelling impacts on climate systems, agriculture, water resources, and society. The research agenda was shaped through an African co-design workshop led by the Alliance for Just Deliberation on Solar Geoengineering and the University of Cape Town. Deadline for applications is 7 August 2026.
GeoMIP Climate Simulation Data Published on Earthmover Marketplace
Reflective has published cloud-optimized GeoMIP (Geoengineering Model Intercomparison Project) climate simulation datasets on the Earthmover marketplace, making large-scale, analysis-ready climate data publicly accessible for research. The release includes high-performance Zarr/Icechunk formats for GeoMIP MIROC-ES2H G6-1.5K simulations, modelling stratospheric aerosol injection to limit global warming, and GeoMIP CESM2-WACCM G6-1.5K simulations, which explore solar radiation modification using NCAR’s Community Earth System Model.
What Europeans Think About Solar Radiation Modification
A new synthesis of multi-country surveys showed that most Europeans have little prior awareness of solar radiation modification, but form cautious views after learning about it. Public opinion is broadly not opposed to SRM research, provided it is transparent, independently governed, and focused on assessing risks, including environmental, ethical, and geopolitical concerns.
Key worries include unequal regional impacts, “moral hazard” effects on climate action, and uncertainty over large-scale deployment outcomes. While modelling and small-scale research are generally accepted, outdoor testing and deployment face stronger opposition and calls for strict international oversight.
Climate Intervention Futures Initiative Launched to Rethink Governance of Climate Technologies
African Tech Futures Labs has launched the Climate Intervention Futures Initiative (CIFI) to strengthen the conceptual foundations for governing climate intervention technologies. The initiative distinguishes between human interventions, Earth system responses, and resulting impacts, arguing that governance should focus on how climate interventions are conducted rather than on their inherently uncertain environmental outcomes.
CIFI will also develop a taxonomy of climate interventions and examine governance lessons from fields such as AI, nuclear energy, and weather modification, aiming to strengthen the conceptual foundations for climate decision-making.
Researchers Develop Balloon-Based Sensor to Improve Stratospheric Aerosol Monitoring
Researchers have developed a lightweight balloon-borne instrument, the Profiling Optical Particle Counter (POPC), to improve measurements of stratospheric aerosol size distribution, a key factor in understanding atmospheric radiative and chemical processes relevant to volcanic activity, wildfires, and potential SRM.
The upgraded 30-channel, 500g device measures particles between 0.3-10 µm and shows strong agreement with established instruments. Deployed in over 87 flights since 2018, it has successfully tracked major volcanic and pyroCb smoke plumes and is now used internationally within the BalNeO network, with data made publicly available for climate research.
Applications Open for African Climate Intervention Fellowship 2026
Applications have opened for the African Climate Intervention Fellowship for Early-Career Researchers (ACIFER) 2026, a fully funded virtual programme hosted by Emerging Climate Frontiers. Running from 31 August to 14 October 2026, the fellowship will train early-career African researchers in carbon dioxide removal (CDR) and solar radiation modification through expert-led webinars, mentorship, climate modelling, policy collaboration, and proposal development. Applications close on 30 July 2026.
Early Arctic Sea-Ice Rethickening Trials Show Promise, but Global Climate Benefits Questioned
Early field trials near Cambridge Bay, Nunavut, Canada using seawater pumping techniques reported ice thickening of up to around 50 cm and temporary improvements in seasonal ice resilience. However, researchers stressed that the findings remain preliminary, with major uncertainties around scalability, environmental impacts, and long-term effectiveness.
Separately, a new analysis argues that sea-ice thickening may work at a local scale but is unlikely to meaningfully influence pan-Arctic or global climate impacts in coming decades, suggesting it should instead be viewed as a local climate adaptation measure led by Arctic communities rather than a geoengineering intervention.
AGU26 to Feature Multiple Sessions on SRM and Climate Intervention Research
The AGU26 Annual Meeting will take place on 7-11 December 2026 in San Francisco, California, bringing together thousands of Earth and space scientists to discuss the latest research. Abstract submissions are currently open, with the deadline set for 5 August 2026.
Several sessions covering Solar Radiation Modification include topics such as aerosol-cloud-radiation interactions, climate intervention benefits, risks and uncertainties, governance, cryosphere responses, and the consequences of and potential responses to Atlantic Meridional Overturning Circulation (AMOC) slowdown or collapse. Find all SRM-related sessions here.
RESEARCH PAPERS
Performance of Solar-Sail Materials at the Photo-Gravitational Equilibrium Point L1 | Authors: Marina Coco, Catello Leonardo Matonti, Giuseppe Governale, et al.
Study finds prolonged space exposure could degrade solar sails, potentially reducing the long-term stability and station-keeping of space-based planetary sunshade systems.
On the detectability by uninvolved parties of covert stratospheric aerosol injection programs producing transboundary impacts | Authors: Wake Smith, Matias Alberola, Jasper G Boers, et al.
Researchers find large-scale SAI deployments would likely be detected through existing satellite and aircraft monitoring long before producing significant climate impacts, making covert implementation unlikely.
Can climate geoengineering mitigate the rising threat of aviation turbulence? | Authors: Han-Chang Ko, Hye-Yeong Chun and Hyun-Kyu Lee
Study finds SAI could offset projected increases in aviation turbulence and potentially reduce turbulence below current levels, though uncertainties remain across models and scenarios.
Ideological divides around solar radiation modification geoengineering | Authors: Gareth Davies
Study suggests opposition to SRM is driven more by ideological commitments than by concerns over safety, governance, or moral hazard.
Legal Frameworks for Geoengineering: A Techno-Policy Perspective | Authors: Rini Adiyattil, S. Thangamayan, et al.
Paper finds existing international legal frameworks are ill-equipped to govern geoengineering, calling for integrated oversight that balances innovation, environmental protection, and climate justice.
Materials with smaller absorptivity could reduce detrimental impacts of stratospheric aerosol injection on the hydrological cycle | Authors: Manouk Geurts, Timofei Sukhodolov, et al.
Researchers report that less absorptive SAI materials such as alumina, calcite, and diamond dust could reduce precipitation and circulation disruptions compared with sulfur, though significant modeling uncertainties remain.
Impacts of stratospheric aerosol injection on extreme precipitation in Senegal, West Africa | Authors: Mamadou Ndiaye, Ibrahima Diba, et al.
Analysis suggests SAI could moderate projected changes in extreme rainfall across Senegal, though it should complement, not replace, emissions reductions and climate adaptation.
The expanding roles of Global South countries in solar radiation modification diplomacy: indicators, cases, and equitable pathways forward | Authors: Zachary Dove, María Inés Carabajal, et al.
Review finds Global South countries are playing an increasingly active role in shaping SRM research and governance, calling for greater funding and representation in decision-making.
Precipitation and circulation changes in the Indian summer monsoon region under stratospheric aerosol intervention in the GLENS simulations | Authors: Shinu Sheela Wilson and Govindasamy Bala
Modeling study suggests SAI could substantially alter the Indian summer monsoon, potentially reducing rainfall despite stabilizing global temperatures, though the findings require broader validation.
Impact of stratospheric aerosol injection on ocean surface circulation in the Gulf of Guinea | Authors: Yves W Pomalegni, Zacharie Sohou, Ezinvi Baloïtcha and Simone Tilmes
Modeling study suggests SAI could moderate climate-driven changes in Gulf of Guinea ocean circulation while introducing additional dynamical complexity and nonlinear ocean responses.
G6-1.5K-SAI and G6sulfur: changes in impacts and uncertainty depending on stratospheric aerosol injection strategy in the Geoengineering Model Intercomparison Project | Authors: Walker Raymond Lee, Daniele Visioni, et al.
Initial results from a new climate experiment suggest subtropical SAI could limit warming to around 1.5°C while improving Arctic cooling and reducing precipitation impacts compared with earlier deployment strategies.
Multi-model analysis of the impact of water vapor on the radiative forcing of volcanic aerosols after the 2022 Hunga Eruption | Authors: Ilaria Quaglia, Daniele Visioni, Ewa M. Bednarz, et al.
Multi-model analysis finds the 2022 Hunga Tonga eruption produced a net cooling effect, driven primarily by sulfate aerosols despite its unprecedented water vapor injection.
Sulfur Exposure for Airplane Passengers From Stratospheric Aerosol Injection | Authors: Alan Robock, Alistair Duffey, et al.
Modeling study suggests high-latitude SAI could expose airline passengers to elevated sulfate aerosol concentrations, highlighting a potential aviation health risk requiring further study.
Highland Pathways Shape Global Dust Vertical Transport and Its Climate Effects | Authors: Yuzhi Liu, Qingzhe Zhu, Weiqi Tang, Dan Li
Study finds global highlands are major dust sources that could influence future solar radiation management strategies, but increased dust may also introduce atmospheric warming risks and climate trade-offs.
Climate intervention through stratospheric aerosol injection may partially mitigate marine heatwaves | Authors: Lala Kounta, Lifeng Luo, Gouri Anil, Daniel M Hueholt, et al.
Study finds SAI could reduce the intensity and duration of marine heatwaves compared with warming scenarios, but benefits remain uneven across ocean regions.
Solar Radiation and Climate Change Research: A Comprehensive Bibliometric Analysis (1991–2025) | Authors: Ahmet Reha Botsalı
Bibliometric study finds rapid growth in solar radiation and climate research, with emerging focus areas including machine learning, climate modeling, heatwaves, and solar geoengineering.
Expert Perceptions of the Viability and Importance of Solar Geoengineering and Carbon Dioxide Removal in Addressing Climate Change: A Snapshot from India and the United States | Authors: Ben Kravitz, Landon Yoder, et al.
Interview study finds climate experts show greater support for CDR than solar geoengineering, with most favoring precautionary research before considering large-scale deployment.
Deployment Strategy Shapes the Polar Climate Response to Marine Cloud Brightening | Authors: E. J. Emme, C.-C. Chen, H. M. Horowitz
Modeling study finds seasonally targeted MCB deployment could improve polar sea ice recovery and temperature outcomes while reducing risks of major climate disruptions.
Modest Arctic-only stratospheric aerosol injection could reduce Arctic warming while holding interhemispheric temperature difference constant | Authors: Natalia Okanikova, Alistair Duffey, et al.
Study suggests Arctic-only SAI could reduce Arctic warming while stabilizing interhemispheric temperature differences, though impacts on tropical precipitation remain uncertain.
Ecological Humility and Geoengineering the Earth | Authors: C. Tyler DesRoches, Joan McGregor & Stylianos Syropoulos
Article argues ecological humility does not necessarily oppose geoengineering, suggesting responsible climate interventions could align with values of care, stewardship, and ecological flourishing.
Solar Geoengineering as a Status Symbol in International Politics | Authors: Joshua B. Horton
Paper suggests SAI could become a geopolitical status symbol, with visible deployments potentially driving competition, prestige races, and strategic power dynamics among nations.
Reframing sea-ice thickening as local adaptation, not climate intervention | Authors: Alistair Duffey, Robbie Mallett, Matthew Henry
Paper argues artificial Arctic sea-ice thickening is better considered a local adaptation measure, with limited potential to influence regional or global climate at scale.
Accelerated European Summer Warming Driven by Atmospheric Circulation Changes in Response to Aerosol Forcing | Authors: P. J. Roldán-Gómez, M. G. Donat, et al.
Study finds declining sulfate emissions have contributed to accelerated European summer warming by reducing aerosol cooling effects, with models previously underestimating the impact.
Does Global Justice Demand Solar Geoengineering? | Authors: Mac WillnersOrcid-ID, Orri Stefánsson
Paper critiques the Global Justice Argument for solar geoengineering research, arguing that it may represent compensation rather than restoration for climate injustices and faces ethical challenges.
Compensation of Ocean Latent Heat to Stratospheric Aerosol Injection Induced Cooling and Its Comparison to Volcanic Aerosols | Authors: Ya Gao, Lili Xia, Juan Wang, Chaochao Gao
Researchers finds sustained SAI weakens the ocean’s ability to buffer cooling compared with volcanic eruptions, highlighting limits of using eruptions like Tambora as analogues for geoengineering.
Atmospheric methane removal as a third climate intervention: termination risks and air pollutant effects | Authors: Katsumasa Tanaka, Weiwei Xiong, Didier A. Hauglustaine, et al.
Study examines atmospheric methane removal as a climate intervention approach, finding it can reduce warming with a slower rebound after termination than SRM, but benefits remain temporary due to methane’s short lifetime.
Geoengineering: Infrastructures for a Global Climate? | Authors: Simon Dalby
Paper highlights governance challenges for future CDR and SRM deployment, warning that weak international frameworks could either hinder cooperation or intensify geopolitical disputes over climate intervention.
Trade-Offs between Sulfuric Acid Aerosol Precursors for Stratospheric Aerosol Geoengineering | Authors: James Franke, Wake Smith, et al.
Analysis compares six sulfur compounds for SAI, finding alternatives such as H₂S and SO₃ could offer potential advantages over SO₂ but face challenges around safety, cost, and deployment feasibility.
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PREPRINTS
The Geoengineering Put: Ecological Debt, Termination Risk, and Asset Prices - Preprint | Authors: Kelly Shue, Samuel M. Hartzmark
Analysis proposes a macro-finance framework for geoengineering, suggesting SRM could act as climate damage insurance while creating ecological debt and long-term termination shock risks.
Impacts of Potential Solar Radiation Modification: Systematic Review Reveals Challenges and Opportunities - Preprint | Authors: Zachary Decker , Lisa Moore, Brian Buma, et al.
Systematic review finds SRM impact research remains dominated by uncertain climate modeling, with limited studies on human and ecosystem effects, highlighting the need for more diverse assessment approaches.
Cosmic Enframing and Atmospheric Capitalism: Toward a Critical Epistemology of Geoengineering and Climate Biopolitics in the Arab Zone of Risk - Preprint | Authors: Nadji Belkheiri
Article examines the philosophical and political implications of geoengineering, arguing that technologies like SAI, MCB, and OIF could deepen inequalities and require more democratic atmospheric governance.
A New Representation of Marine Stratocumulus Cloud Morphology Reveals Morphology-Dependent Variability in Cloud Susceptibilities - Preprint | Authors: Tom Goren, Goutam Choudhury, Graham Feingold
Study proposes a ternary framework for classifying marine stratocumulus clouds, showing that cloud morphology strongly influences responses to droplet changes and MCB effectiveness.
Deflective Sunshades: conceptual design and origami-inspired folding strategy - Preprint | Authors: Benedetta Marazzato, Jonas Seiler, et al.
Study proposes a deflective space-based SRM sunshade concept using inclined reflective surfaces to improve stability, scalability, and deployment efficiency.
A new Profiling Optical Particle Counter to study stratospheric aerosols - Preprint | Authors: Jean-Paul Vernier, Nicolas Dumelie, et al.
Researchers enhance a lightweight optical particle counter for balloon missions, enabling affordable measurements of stratospheric aerosols and supporting climate research, satellite validation, and SRM studies.
Geoengineering, moral hazard, and disrespect - Preprint | Authors: Alice Baderin, Maxime Lepoutre
Paper challenges the moral hazard objection to solar geoengineering research, arguing that restricting research may be unjustified without stronger evidence of reduced climate action.
Sunshades in Space Undertaking. A Cash-Flow-Contingent Framework for Financing a Global Public-Good Projects - Preprint | Authors: Christer Persson, Peder Jonsson, Lars Söderqvist, et al.
Proposal introduces the FiGo financing model for SiSU, a space-based solar radiation modification concept designed to support long-term sunshade development through independent governance and investment structures.
Multi-scenario Hydro-climatic Mean and Peak Responses of Central–South Asia and the Tibetan Plateau to Future Warming and Stratospheric Aerosol Intervention - Preprint | Authors: Azfar Hussain, Huizing Liu, Abolfazl Rezaei, et al.
Study finds SRM could reduce warming-driven hydroclimate changes across Central and South Asia, partially restoring water availability and cryosphere processes, but cannot fully offset regional water stress.
Marine Cloud Brightening and Precipitation Responses in the Tropical Pacific Ocean - Preprint | Authors: Dr. Pornampai Narenpitak, Siriwat Kongkulsiri, et al.
Modeling study finds Southeast and South Pacific MCB deployments produce the strongest cooling effects, while also triggering remote climate impacts through atmospheric teleconnections.
Temperature stabilization using Stratospheric Aerosol Injections minimises drying over Africa only when combined with a strong decarbonization effort - Preprint | Authors: Temitope S. Egbebiyi, Temitope S. Fafure, et al.
Modeling study finds SAI could reduce temperature extremes across Africa under overshoot scenarios, but precipitation responses remain uneven and cannot fully resolve regional water-cycle changes.
Transport Efficiency of Turbulent Parcel in the Marine Boundary Layer and Its Implications for Droplet Activation in Marine Cloud Brightening - Preprint | Authors: Pan Zhao, Jingyi Chen, Yang Yang, Yue Jia, and Yang Yu
Modeling study finds sea-salt aerosol transport to marine clouds is strongly influenced by cloud conditions and turbulence, improving understanding of key MCB feasibility constraints.
Impacts of Solar Radiation Modification on Extreme Climate Indices in the Philippines - Preprint | Authors: Patricia Ann Jaranilla Sanchez, Hanz Lester Cate Lunas, et al.
Study finds SRM could alter future temperature and rainfall extremes in the Philippines, with impacts varying across climate zones and scenarios.
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WEB POSTS & REPORTS
Solar Geoengineering Updates - Monthly Solar Geoengineering Updates (May’2026)
LinkedIn - Science7 (S7), the national science academies of the G7, has weighed in on geoengineering in the Arctic with a recommendation
The Times - Why sunblock in the Earth’s atmosphere is no longer a crazy idea
Clare Farrell - In a week of extreme heat, can we talk about geo-engineering?
CFG - Why future generations need a seat at the table in the climate interventions discussion
DSG - Reading the Signals: Stardust and the Shape of an Emerging Field
Planetary Sunshade Foundation - Brussels Workshop on EU Governance of Solar Geoengineering
Federation of American Scientists - I Want to Talk About Solar Geoengineering and You Should Too!
Geopolitical Monitor - The Geopolitics of Geo-Engineering: Weather Warfare vs. Climate Security
New Scientist - Earth has a mysterious triple symmetry that may influence its climate
WBIW - Indiana Youth Tackle Climate Crisis With Ideas at Second Annual IU Geoengineering Summit
The Abstract M Surj - Cloudy skies could point to brighter days ahead
Silverlining - Engineering a Particle for the Stratosphere
Degrees Initiative - Next-level grants awarded to boost Global South SRM expertise
SRM Malaria Dashboard - Data driven solutions for a malaria free future
SRM360 - Two Conferences Highlight a Transatlantic Divide on SRM
ACIRhub - Africa’s Climate Future Demands a Voice in Global Geoengineering Debates
Kelly Wanser - Cooling the planet cheaply is not the primary challenge. Safety is
Russell Newman - How to Cool the Planet for $45 Billion
Peter Dynes - Before We Touch the Earth’s Thermostat, We Need to Understand Who Else Has a Hand on It
Phys.Org - Solar geoengineering could shield up to 75% of oceans from heat waves
SRM360 - Planes for SAI May Be Closer and Cheaper Than Previously Thought
Caliber - As climate crisis deepens, geoengineering emerges as next battleground
LinkedIn - Can Particles Added to the Stratosphere Be Effectively Removed?
Aether Symposium - Artificial Intelligence and Solar Radiation Management - A Legal Analysis of Governance Gaps in EU and International Law
RMetS - RMetS national meeting – deliberately cooling the planet. Could we? Should we? Would we?
Co-CREATE - A Recap of the Co-CREATE Forum
Daily Mail - Is this the key to preventing a Super El Niño? Scientists want to dim the SUN to shield the oceans from heatwaves
Legal Planet - Legislating Sunlight Reflection in Latin America and the Caribbean
The Guardian - ‘At first, the idea does sound crazy’: meet the scientists trying to refreeze the Arctic
MIT Technology Review - Hacking the atmosphere: Geoengineering gets a reality check
Harvard Center for International Development - Examining How Solar Geoengineering Changes Global Crop Outcomes: CID Faculty Research Insights
MIT Technology Review - Geoengineering still faces major practical challenges
The Guardian - ‘Termination shock’: trust our expert warnings on geoengineering’s planetary risks
The Degrees Initiative - Science-policy dialogue at PARLATINO anchors Latin American SRM discussions in regional evidence
Department of Meteorology - Frida Bender awarded Formas funding for research on climate intervention
What is this thing called “Governance”?
ACIRhub - From Pinatubo to Policy: ACIRH Meets in Accra to Discuss Climate Intervention
DSG - SRM as a Tool for Climate Security: Competitive Framing and its (Geo)Political Implications
Green European Journal - A Feminist Approach to Solar Geoengineering
Inevitable & Obvious - Stabilization Needs a State That Works
MSU - Cooling strategy not a panacea for marine heat waves
ABC Net - Private companies want to geoengineer the sky. The rain billions of people depend on could be disrupted
CPG - Scientists Plan to Release Air Bubbles Underwater to Protect Antarctica’s “Doomsday Glacier” from Melting
C.F.G - What Europeans think about solar radiation modification
EPFL - The hidden atmospheric cost of Arctic shipping
SRM360 - What Do People in Bangladesh Think About SRM?
Jan Umsonst - A short on what it means to cool down a water planet...
Peter Dynes - The White Revolution That Could Help Cool the Planet
African Tech Futures Lab - Introducing the Climate Intervention Futures Initiative: Building Conceptual Infrastructure for a New Frontier of Climate Action
New Scientist - Geoengineering could expose plane passengers to sulphuric acid
Heartlander News - ‘Terrible idea’: Top Trump official reveals how tinkering with the sun could land companies in hot water
Energy Times - Can we cool the solar geoengineering debate?
Degrees Initiative - Latin American scientists lead SRM biodiversity workshop in Bogotá
SRM360 - Risk-Risk Analysis and SRM: Moving Beyond Misunderstanding
FP Analytics - Tackling the Existential Threat of Climate Change - Collective action to manage, mitigate, and reduce climate risk (Report)
JOB OPPORTUNITIES
Postdoctoral Position: Modeling Tropospheric and Stratospheric Volcanic Sulfate Aerosols Processes at The Laboratoire de Météorologie Dynamique and Laboratoire Interuniversitaire des Systèmes Atmosphériques | Greater Paris Metropolitan Region
“The Laboratoire de Météorologie Dynamique and Laboratoire Interuniversitaire des Systèmes Atmosphériques are seeking to recruit a postdoctoral researcher to work on modeling tropospheric and stratospheric volcanic sulfate aerosol processes.”
PhD in Climate Modelling: Modelling the injection of stratospheric aerosols and its impact on the climate of France
“The aim of this thesis will be to estimate and understand the effects of applying SAI-based climate intervention methods on France’s climate.”
UPCOMING EVENTS
08 July | Online - SRM Governance, Ethics & Africa’s Role in Global Decision-Making by Emerging Climate Frontiers
10 July | University of Cambridge, UK - Climate Repair: Can we Refreeze the Arctic? by Centre for Climate Repair
16 July | Online - Live Discussion: The History of Solar Geoengineering by SRM360
10-11 September | Washington, DC. - 2026 RFF and Harvard SRM Social Science Research Workshop
12-15 October | Malaysia - Global Tipping Points 2026 | Abstract Deadline: 15 May
7–11 December 2026 | San Francisco, CA - AGU26 Anuual Meeting | Abstract Submission Deadline: 05 August 2026
10-14 January 2027 | Denver, CO & Online | 19th Symposium on Aerosol–Cloud–Climate Interactions
08-09 April 2027 | United States - 2027 Solar Radiation Management Annual Meeting by Simons Foundation
Solar Geoengineering Events Calendar
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PODCASTS
How conspiracy theories impact geoengineering efforts | How We Survive
“Across the country, anti-geoengineering bills are being proposed in state legislatures. These bills would ban the intentional release of chemicals into the atmosphere for the purpose of affecting sunlight or weather, and could impact future research into stratospheric aerosol injection — or even cloud seeding.
But, unlike environmentalists that are advocating against the potential use of geoengineering as a climate solution, the bills’ proponents think that it’s already happening. Their proof? You can see it in the sky, they say: just look up.
In this episode of “How We Survive,” Amy Scott talks with producer Rachel Kahn about how a once-fringe conspiracy theory could impact the future of geoengineering.”
Inevitable & Obvious - A Sunshade For Earth, And Who Controls It — Ross Centers and Morgan Goodwin
”A planetary sunshade is one of those ideas that gets filed under science fiction and left there. A constellation of thin reflectors, parked at the gravitational balance point between the Earth and the Sun, shading the planet by a percent or so and buying us time on warming. The reason to take it seriously now is that the industrial base required to build one is the same base that SpaceX, NASA, and a handful of startups are already racing to stand up for entirely commercial reasons. Ross Centers and Morgan Goodwin of the Planetary Sunshade Institute have been working on this since before it was a field, and in this conversation we trace the whole path: from why even clean energy eventually hits a planetary limit, to how you’d manufacture forty-kilometer solar sails out of moon dust, to who would actually be in charge of the global thermostat once it exists.”
Bad Idea #57 “Hands off Mother Earth” with Anni Pokela | Saving the World From Bad Ideas
“In this episode of Saving the World from Bad Ideas, Mark Lynas speaks with Anni Pokela of Operaatio Arktis about why “Hands off Mother Earth” is no longer a serious response to the climate crisis. The conversation explores how humans are already deeply entangled with planetary systems, whether through emissions, land use, or atmospheric pollution, and why the real question is no longer whether we intervene, but how we do so responsibly. From Arctic tipping points and AMOC collapse risks to solar radiation management, social license, indigenous engagement, and the politics of research, this is a probing discussion about climate intervention in a world where inaction is itself a form of intervention.”
The audacious plan to refreeze the Arctic | The Guardian - Science Weekly
“Sea ice is melting fast and worsening the climate crisis. But what if there were a way to thicken it again? Madeleine Finlay is joined by environment editor Damian Carrington to discuss a bold attempt to refreeze the Arctic which is showing early signs of success. He visited the project to find out how it will work, how much it will cost and whether it really has potential to improve the fate of the Arctic’s ice.”
Your geoengineering questions, answered! | How We Survive
“This season, we explored large-scale climate interventions that could be our last hope. One intervention in particular, solar geoengineering, made a lot of listeners’ heads spin. (We’re right there with you.)
This episode, we answer some of your most pressing questions about solar geoengineering. We get into whether solar sunshades could harm crops, what international efforts around solar geoengineering look like, and what would happen if a powerful country went rogue and put sulfur dioxide into the stratosphere. Plus, we look at a solution to some of these more extreme solutions: decarbonizing.”
Inside the most sophisticated plan for solar geoengineering | Catalyst with Shayle Kann
“One of the biggest challenges with technologies that reduce greenhouse gas emissions is that they require mass adoption. Solar radiation management (or SRM) has the opposite problem.
By Stardust Solutions’ estimate, dispersing three million tons of reflective particles into the stratosphere could cool the planet by 1.5 degrees Celsius for the relatively small price of $30 billion; that’s less than the cost of a single hyperscale data center.
Despite concerns about such an endeavor, the company is building a proprietary particle injection system with the goal of being deployment-ready this decade. While Stardust says they won’t deploy without the explicit authorization of multiple governments, questions nonetheless remain around the safety and ethics of SRM.
In this episode, Shayle sits down with Yanai Yedvab, CEO and co-founder of Stardust, to unpack how the technology works, its potential risks, and when to deploy it.
Shayle and Yanai discuss topics like:
-Why Stardust is eschewing sulfur dioxide in favor of naturally occurring, biodegradable amorphous silica and calcite particles
-How Stardust’s technology incorporates real-time testing.
-Stardust’s commitment to only deploying under strict international regulation.
-How the company balances the risk that solar geoengineering will reduce the economic incentive to decarbonize heavy industries with the imperative of an immediate climate solution.
-Why Stardust structured itself as a private company rather than an academic or non-profit lab.”
Novel Solutions | How We Survive
“Talk to enough experts about geoengineering and the conversation eventually turns to termination shock. That’s the idea that if we were to start cooling the planet and then suddenly stop, the resulting “shock” of heat could be catastrophic. It’s also the title of a novel by bestselling sci-fi writer Neal Stephenson, who explores the science, politics, and unintended consequences of trying to engineer the earth’s climate.
In this episode, we sit down with Stephenson to talk about what sci-fi can teach us about real-world climate solutions. But first: a climate idea so ambitious it sounds like it came straight from the pages of science fiction.”
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YOUTUBE VIDEOS
Plan C for Civilization: Film Screening and Panel | Columbia Business School
“Plan C for Civilization tackles the promise and peril of solar geoengineering with exclusive verite access to its protagonist David Keith and the SCoPEx project, as well as the rogue geoengineers of Make Sunsets. From Bangladesh to Nevada, solar geoengineering is emerging after more than 60 years in the shadows, and with it, a new chapter of the climate change saga. After the film screening, V. Faye McNeill (Chemical Engineering) and Gernot Wagner (Columbia Business School) had a discussion with the documentary filmmaker Ben Kalina (Mangrove Media LLC). This session was moderated by Vincent Sandow-Straesser, ’26CCS.”
Climate Intervention Virtual Symposium #25 (Dr. Timofei Sukhodolov & Prof. Brad Marston) | Solar Climate Intervention Talks
Climate Intervention Virtual Symposium #24 (Dr. Micheal Diamond) | Solar Climate Intervention Talks
Climate Intervention Virtual Symposium 23 (Dr Anna Lange) | Solar Climate Intervention Talks
International Law and Climate Interventions: Is there a there there? with Dan Bodansky in Cambridge | Centre for Climate Repair
“May we engineer the climate? Professor Bodansky is a leading authority on international environmental law generally, and global climate change law in particular. He has previously served as the Climate Change Coordinator and attorney-advisor at the U.S. Department of State. His books, including “The Art and Craft of International Environmental Law”, and “International Climate Change Law” have received highly prestigious awards in the field of environmental governance.”
Live Discussion: How Should Solar Geoengineering Research Be Governed? | SRM360
Then vs now | Arctic Reflections
“What a difference a few months can make. The conditions in Qikiqtarjuaq now are a world away from what they were when we were out thickening the ice in February. As the temperatures rises, the melting snow produces melt-ponds, which eventually drain through the sea ice.”
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