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

🚨 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

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 🧵👇

✉️ 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 👇

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...

“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...

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...

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...

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

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...

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

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...

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

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.

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

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...

"If Russia occupied the United States, it would not impose a collaborationist regime of such hare-brained incompetents. Kleptocrats would be expected as commissars, but not patent lunatics." writes Sidney Blumenthal in The Guardian. www.theguardian.com/commentisfre...

I have been interviewed by the International Science Council media team on climate governance, Baku COP29, and the role of the social sciences. Here's the link: council.science/blog/cop29-h...

Bluesky now has over 20M people!! 🎉 We've been adding over a million users per day for the last few days. To celebrate, here are 20 fun facts about Bluesky:

Returning from two intense but incredibly rewarding days with #SEI’s Science Advisory Council, where we discussed SEI’s exciting new strategy for 2025-2029. It’s inspiring to see the institute flourishing & growing despite the (geo)political challenges. Looking forward to continued collaboration!

Welcome to the new ClimateBook bluesky feed. This replaces my Twitter feed, which I have abandoned, because of the wreckage wrought by Elon Musk.

Super useful Bluesky guide 👇

Chris Wright, an oil and gas industry CEO and Trump’s choice as head of the US Department of Energy, “has likened efforts by Democrats to combat global warming to Soviet-style communism.” www.theguardian.com/us-news/2024...

Nieuwe nationale oproep van WOinActie aan iedereen die om het hoger onderwijs geeft om ons te steunen in onze strijd voor het behoud van de Nederlandse universiteiten. Demonstratie: 25 november, 13:00, Malieveld, Den Haag. woinactie.blogspot.com/2024/11/steu...

20 tips how to survive the broligarchy. "Journalists, publishers, writers, academics are always in the first wave. ... Authoritarianism is as predictable as a Swiss train." www.theguardian.com/commentisfre...

This is interesting. NPR left Twitter six months ago and saw only a single percentage point difference in traffic despite having over 8 million followers. (Algorithmic changes meant people weren’t seeing/engaging with their tweets anyway) niemanreports.org/npr-twitter-...

Another day, another million new people have joined Bluesky! 18M users? 🙂‍↔️ 18M friends 🙂‍↕️

Massive protests planned in the Netherlands as students and faculty rally against drastic cuts by the new right-wing government to university core funding. The academic community is in uproar.

Just had an inspiring visit to Uppsala University, meeting with the Climate Change Leadership group. It was a fantastic opportunity to learn about their many research projects & discuss future collaboration. A huge thank you to @mikaelkarlsson.bsky.social for the invitation and warm welcome!

“Why billionaires love a ‘bonkers’ solar geoengineering climate solution” – I was invited to discuss this intriguing question for a new article in Forbes, by Maeve Campbell. Link is here: www.forbes.com/sites/maevec...

I’ve just joined the Advisory Board of the Development and Peace Foundation (SEF), a German cross-party non-profit organization. I look forward to reconnecting with policymakers & stakeholders in Germany to discuss the planetary emergency & pathways towards sustainability in difficult times.