Julio C. Postigo, Associate Professor in the Department of Geography at Indiana University, shares why he signed the open letter calling for an International Non-Use Agreement on Solar Geoengineering 💬

❗ Funding for solar geoengineering has increased more than tenfold between 2020 and 2025. Jared Sanborn and J. P. Sapinski look at who funded solar geoengineering projects and who received these funds in this new blog post. www.solargeoeng.org/who-funds-an... 🧵 ⬇️

Injecting particulates into the atmosphere isn’t a magical fix for the climate crisis (Mike Hulme) www.theguardian.com/commentisfre...

There are problems with a geoengineering techno-fix for the climate crisis | Mike Hulme

Geoengineering does little to defuse most of the risks that really matter for people – and it runs the risk of making some harms worse

theguardian.com

🚨 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

We know enough to categorize Stratospheric Aerosol Injections (SAI) as a dangerous distraction from our need to reduce greenhouse gas emissions - Solar Geoengineering Non-Use Agreement

On September 9th, 2025, we published the article Safeguarding the polar regions from dangerous geoengineering: a critical assessment of proposed concepts and future prospects in the scientific journal...

solargeoeng.org

New Book Out! 📖 I have just published a very personal book, tracing my family’s history from 1560 to 1945—12 generations of farmers, blacksmiths, shoemakers & shepherds. Book in German: www.wallstein-verlag.de/978383535886... Translation of intro in English: www.frankbiermann.org/post/introdu...

🚨Our new article in GEC shows how the #UNFCCC can cause “problem-shifting”—that some solutions create new problems. We analysed 182 communications from 25 industrialized countries & found 718 instances of problem shifts, across sectors, borders & generations. Open access: doi.org/10.1016/j.gl...

📊 Launch of the Earth System Governance Data Directory A living and collaborative open-access resource to help researchers and practitioners find and share existing and upcoming datasets relevant to global environmental governance. 🔗 www.earthsystemgovernance.org/news/launch-...

‼️ 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...

📢 "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 🧵👇

Africa Is Not a Solar Geoengineering Test Site

Chukwumerije Okereke & Nnimmo Bassey warn that experimenting with speculative technologies on the continent is a grave act of climate injustice.

project-syndicate.org

✉️ ESG Newsletter May Filled with publication opportunities for #TCESG2025 along with the latest news, upcoming events, exciting opportunities and recent publications shared across the ESG network. 🔗 Read it here: mailchi.mp/earthsystemg...

🚨 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 👇

ARIA’s ‘Exploring Climate Cooling’ Folly - Solar Geoengineering Non-Use Agreement

On 7 May 2025, the UK Advanced Research and Invention Agency (ARIA) announced the list of projects to be funded under its £60 million solar geoengineering research initiative. Readers of this blog wil...

solargeoeng.org

It was a pleasure delivering my inaugural lecture as the 2025 Zennström Visiting Professor in Climate Change Leadership at Uppsala University last Monday, jointly with fellow Zennström Visiting Professor Aarti Gupta. climatechangeleadership.blog.uu.se/2025/04/09/i...

Inaugural lecture Aarti Gupta and Frank Biermann - Climate Change Leadership

Inaugural lecture by the 2025 Zennström visiting professors Aarti Gupta and Frank Biermann at Uppsala University

climatechangeleadership.blog.uu.se

“The UK government should not encourage false solutions like solar geoengineering and the people of the UK should not stand for it.” A clear and important piece by Raymond Pierrehumbert and Michael Mann: www.theguardian.com/commentisfre...

The UK’s gamble on solar geoengineering is like using aspirin for cancer | Raymond Pierrehumbert and Michael Mann

Injecting pollutants into the atmosphere to reflect the sun would be extremely dangerous, but the UK is funding field trials

theguardian.com

Forthcoming with Routledge: "Essential Concepts for Implementing the Sustainable Development Goals--An A-Z Guide"

Utrecht University is recruiting a new Dean for our Faculty of Geosciences! The faculty covers Earth Sciences; Physical Geography; Human Geography & Spatial Planning; & the Copernicus Institute of Sustainable Development. Altogether 3,700 students & 900 staff. Join us! www.uu.nl/en/organisat...

Dean of the Faculty of Geosciences

Are you a leading researcher, experienced administrator and people connector? Do you have a heart for geosciences, with a focus on sustainability and impact?

uu.nl

The Earth System Governance journal is now on BlueSky! Join us at @esg-journal.bsky.social. All articles are open access and can be downloaded free of charge, anywhere, anytime. [And of course, we've deleted our account on what was known as Twitter.]

This is what should be on every front page right now. What's happening in the US right now is an illegal power grab by a private citizen. IT'S A COUP. It's a digital coup. It's Musk who's leading it. The consequences are terrifying. And it's coming for us next. 1/ open.substack.com/pub/broligar...

IT IS A COUP

This is what should be on every front page in 150 point banner headlines. All I have is this Substack but I lay it beneath your feet and pray to a higher power that I'm wrong.

open.substack.com

Here's a new critical piece on solar geoengineering in The Ecologist (w/ some of my quotes): theecologist.org/2025/feb/04/...

Weaponising solar geoengineering

Solar geoengineering, if weaponised, has the potential to deepen global inequality and escalate conflicts worldwide.

theecologist.org

I've been appointed Zennström Visiting Professor in Climate Change Leadership at Uppsala University, jointly with Aarti Gupta. From March to July, I'll be working with Uppsala’s outstanding climate policy team -- if you're in or near Uppsala, I'd love to meet up! www.mynewsdesk.com/uu/pressrele...

Frank Biermann and Aarti Gupta new Zennström Professors of Climate Change Leadership

Professor Aarti Gupta from Wageningen University and Professor Frank Biermann from Utrecht University will become Visiting Professors of Climate Change...

mynewsdesk.com

Huge congratulations to Dr Abbie Yunita on defending her dissertation, "Recursive Shifts: Manifestations of the SDGs in Contemporary Development Practice" just before winter break! A key contribution to understanding the #SDGs & a proud outcome of the #ERC #GLOBALGOALS Project! Well done, Abbie!

🚨 New Article Alert! 🚨 "Three Pathways to Nonuse Agreement(s) on Solar Geoengineering" Exploring possible ways to prevent the development of solar geoengineering. How can we overcome opposition from powerful states? Led by Stacy VanDeveer. Open Access: doi.org/10.1017/S089...

Just interviewed by "Undark" magazine on the many risks and dangers of solar geoengineering. The article also highlights the alarming private investments pouring into this speculative, planet-altering tech. Open access: undark.org/2024/12/03/u... #ClimateRisk #Geoengineering

Geoengineering Could Alter Global Climate. Should It?

Scientists and companies increasingly support blocking some sunlight to avoid the worst impacts of global warming.

undark.org

Vanuatu stands firmly against solar geoengineering, linking it to crime of ecocide: “Vanuatu is advocating for a ban or non-use agreement on solar geoengineering. ...such an agreement is necessary to ... protect the world’s most vulnerable peoples & ecosystems.” www.solargeoeng.org/statement-fr...

Statement from Vanuatu: Why a Non-Use Mechanism on Solar Geoengineering is urgently needed - Solar Geoengineering Non-Use Agreement

Statement by Honorable Ralph Regenvanu, Vanuatu’s Special Envoy for Climate Change and Environment, delivered at Science Summit at the 79th United Nations General Assembly, 23 September 2024.

solargeoeng.org

More walk-outs from Twitter users: www.thelondoneconomic.com/news/media/e...

European Federation of Journalists to stop posting content on X

The EFJ represents over 295,000 journalists in 44 countries.

thelondoneconomic.com

Huge congratulations to Dr. Valeria Zambianchi on defending her PhD today, awarded jointly by KU Leuven & Utrecht University! 🎉 Her excellent dissertation dives deep into the complexities of "Climate Policyscapes", examining their historical evolution, policy interactions, and impacts in the UK.

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.

Solar Geoengineering Non-use Agreement@solargeoeng.bsky.social · 2y ago

❗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/

I look forward to speaking at the Planetary Summit Nov 23-24 in Venice, Italy. Join the conversation or follow along to learn about new pathways to address Planetary-scale challenges via @berggrueninst (still on X) and #PlanetarySummit. Learn More: berggruen.org/projects/pla... #PlanetarySummit

Berggruen Institute

berggruen.org

Interesting piece by @oskarlindgren.bsky.social www.newsecuritybeat.org/2024/11/time...

We heard you and we are verified on Bluesky! Follow the World Health Organization here for public health updates.🎉

📢 25 november komen we in actie tegen de bezuinigingen op onderwijs en onderzoek. Laat ook je stem horen voor toegankelijk onderwijs, tegen ontslagen & tegen de langstudeerboete. Teken de petitie een kom in actie! campagnes.degoedezaak.org/campaigns/st...

Stop de bezuinigingen op het hoger onderwijs!

campagnes.degoedezaak.org