📢 ❗Just published: "Solar geoengineering for profit" In this new blog, a group of academics responds to recent for-profit solar geoengineering ventures. www.solargeoeng.org/solar-geoeng... Their key message? 🧵👇 1/8

🚨 New Blog Alert🚨 “𝐖𝐞 𝐤𝐧𝐨𝐰 𝐞𝐧𝐨𝐮𝐠𝐡 𝐭𝐨 𝐜𝐚𝐭𝐞𝐠𝐨𝐫𝐢𝐳𝐞 𝐒𝐭𝐫𝐚𝐭𝐨𝐬𝐩𝐡𝐞𝐫𝐢𝐜 𝐀𝐞𝐫𝐨𝐬𝐨𝐥 𝐈𝐧𝐣𝐞𝐜𝐭𝐢𝐨𝐧𝐬 (𝐒𝐀𝐈) 𝐚𝐬 𝐚 𝐝𝐚𝐧𝐠𝐞𝐫𝐨𝐮𝐬 𝐝𝐢𝐬𝐭𝐫𝐚𝐜𝐭𝐢𝐨𝐧 𝐟𝐫𝐨𝐦 𝐨𝐮𝐫 𝐧𝐞𝐞𝐝 𝐭𝐨 𝐫𝐞𝐝𝐮𝐜𝐞 𝐠𝐫𝐞𝐞𝐧𝐡𝐨𝐮𝐬𝐞 𝐠𝐚𝐬 𝐞𝐦𝐢𝐬𝐬𝐢𝐨𝐧𝐬” www.solargeoeng.org/we-know-enou... 🧵1/6

‼️ Join us this Friday at #ClimateWeekNYC for our virtual session: “Solar Geoengineering: The Case for an International Non-Use Agreement” 📆 September 26, 2025 🕘 9:00–10:30 AM EDT 📍 Online 🔗 Register here: foe-org.zoom.us/webinar/regi...

Dr. Margaretha Wewerinke-Singh, Assoc. Prof. of Sustainability Law at the University of Amsterdam, Adjunct Prof. of Law at the University of Fiji & Member of the Permanent Court of Arbitration, on why she signed the Open Letter calling for an International Non-Use Agreement on Solar Geoengineering 💬

📢 "𝗔𝗳𝗿𝗶𝗰𝗮 𝗜𝘀 𝗡𝗼𝘁 𝗮 𝗦𝗼𝗹𝗮𝗿 𝗚𝗲𝗼𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗧𝗲𝘀𝘁 𝗦𝗶𝘁𝗲" Prof. Chukwumerije Okereke & Nnimmo Bassey warn that experimenting with speculative solar geoengineering technologies on the African continent constitutes a grave act of climate injustice. www.project-syndicate.org/commentary/a... Some quotes 🧵👇

Dr. Rakhyun E. Kim, Associate Professor of Earth System Governance at the Copernicus Institute of Sustainable Development at Utrecht University, on why he signed the Open Letter calling for an International Non-Use Agreement on Solar Geoengineering 💬 @rakhyunkim.bsky.social

🚨 𝗝𝘂𝘀𝘁 𝗿𝗲𝗹𝗲𝗮𝘀𝗲𝗱: “𝗔𝗥𝗜𝗔'𝘀 '𝗘𝘅𝗽𝗹𝗼𝗿𝗶𝗻𝗴 𝗖𝗹𝗶𝗺𝗮𝘁𝗲 𝗖𝗼𝗼𝗹𝗶𝗻𝗴' 𝗙𝗼𝗹𝗹𝘆” Professors R. Pierrehumbert, M. Hulme, P. Newell & A. Stirling critique the UK Advanced Research and Invention Agency’s unprecedented £60 million solar geoengineering research initiative. A thread on their key concerns 👇

Professor Alexandre A. Costa, climate scientist at the Universidade Estadual do Ceará, on why he signed the Open Letter calling for an International Non-Use Agreement on Solar Geoengineering 💬 @profalexandrecosta.bsky.social

Prof. Jennie Stephens, Professor of Climate Justice at the National University of Ireland Maynooth, on why she signed the Open Letter calling for an International Non-Use Agreement on Solar Geoengineering 💬 @jenniecstephens.bsky.social @maynoothuniversity.ie

Prof. Louis Kotzé, Professor of Law and Chair of the Law Group at Wageningen University & Research, on why he signed the Open Letter calling for an International Non-Use Agreement on Solar Geoengineering 💬

Daniel Cziczo, professor and head of the Department of Earth, Atmospheric, and Planetary Sciences at Purdue University, shares why he signed the Open Letter calling for an International Non-Use Agreement on Solar Geoengineering 💬 @dancziczo.bsky.social

📢 Young activists are calling for a ban on solar geoengineering. In this recent article, they argue that "using this controversial technology would be a profound betrayal of today's youth and future generations," advocating for a Non-Use Agreement on Solar Geoengineering.

Considering this and a number of additional risks, I repeat (with >500 colleagues) our call for an International Non-Use Agreement on Solar Geoengineering www.solargeoeng.org @solargeoeng.bsky.social

Pleased to join hundreds of #climate scientists and scholars from around the world in supporting the call for an International Non-Use Agreement on #Solar Geoengineering. Read more here:

📢 “Aligned with these recommendations, the EU should now take the lead globally to initiate an international norm shift towards non-use. We should not be talking about SRM as an option. It’s too risky to keep it on the table.” - Aarti Gupta, Professor of Global Environmental Governance

📢 Statement from Vanuatu: “Why a Non-Use Mechanism on Solar Geoengineering is urgently needed” by Honorable Ralph Regenvanu, Vanuatu’s Special Envoy for Climate Change and Environment, delivered at Science Summit during UNGA79 @rregenvanu.bsky.social Some excerpts of his powerful call: [1/9]

Can I please draw attention to this important initiative which is now joining us here. Solar radiation manipulation (i.e. the direct injection of particles into the stratosphere) implies truly existential risks and it offers - regrettably - no solution for the currently ongoing planetary crisis.

❗Over 535 scholars from 67 countries and 1900+ civil society organizations support the call for an International Non-Use Agreement on #SolarGeoengineering. You can join them here: www.solargeoeng.org/take-action/