"One of the workshop’s shared diagnoses was that the climate movement must broaden its struggle beyond carbon. This means organising around people’s material realities while confronting the elites and corporations driving destruction." theecologist.org/2025/nov/12/...

Do climate conferences actually achieve anything? A lot of people have strong opinions, but we wanted measurements, so we look at how the stock market moves during yearly international meetings called COPs – explanation below, or read the paper here: iopscience.iop.org/article/10.1...

ICTP has issued a call for IPCC AR7 Chapter Scientists, with funding for developing country candidates from Wellcome. Kumaran Kadirgama and I will be serving as CLAs for the WGIII Industry chapter, and we would welcome good candidates. Deadline Oct 18 @ipcc.bsky.social www.ictp.it/opportunity/...

Going backwards down a slippery slope - "To attempt to win over sceptical countries, diplomats are discussing options including covering a bigger share of the target with carbon credits..." www.reuters.com/sustainabili...

Our finalised paper on flat10MIP is finally up in GMD! This is the experimental protocol which allows for a simple, emissions-driven evaluation of TCRE, ZEC and climate reversibility in CMIP7. Thanks so much to all who ran these simulations as a proof of concept! gmd.copernicus.org/articles/18/...

Our paper is out today in @nature.com where we assess a Prudent Planetary Limit for Geologic Carbon Storage: www.nature.com/articles/s41...

In a new piece for @granthamicl.bsky.social, @frediotto.bsky.social and I unpack the significance of the ICJ’s landmark advisory opinion. We reflect on how it reshapes the legal framing of climate action and what it means for states’ obligations going forward.

Heat kills, more than we think and we can see. Heat intensified by climate change kills even more. For the 1st time, we conducted a rapid impact attribution study looking at the additional deaths that occurred due to climate change across 12 cities in Europe, in close to real-time: shorturl.at/mv6ms

*** Faktencheck*** In der Generaldebatte im Bundestag sprach Bundeskanzler Friedrich #Merz auch zum Klimaschutz. Er sagte: "Selbst wenn wir alle morgen klimaneutral wären, würde keine einzige Naturkatastrophe weniger geschehen". Ein Faktencheck. 1/

Including a climate module and climate damages within a process-based integrated assessment model: meet FRIDA. egusphere.copernicus.org/preprints/20...

Colonial extraction and unequal exchange have shaped two centuries of North-South inequality. A thread on the new study written with @gatonievas.bsky.social [A thread 1/8🧵]

Call for abstracts – now open! As the world edges closer to surpassing the 1.5°C global warming threshold, it's time to confront the risks of climate overshoot. Join leading scientists at the first-ever Overshoot Conference, hosted by IIASA. iiasa.ac.at/events/sep-2... @carlschleussner.bsky.social

Urbanization trends are reshaping human settlement patterns and energy needs. Our recent (open access) work, led by Jessica Kersey and Samuel Miles, explores these dynamics across countries in Sub-Saharan Africa 🧵

Our recent @nature.com study highlights disproportionate climate risk to children worldwide. This is the first outcome of the @erc.europa.eu Consolidator Grant "LAgrangian Climate Risk and IMpact Attribution" (LACRIMA). A big thanks to the ERC for the support. erc.europa.eu/news-events/...

Will you live an unprecedented life? In our new paper in @nature.com and accompanying @savethechildren.org report, we detect who will face unprecedented lifetime exposure to climate extremes (🧵) 1/n Report: resourcecentre.savethechildren.net/document/bor... Paper: www.nature.com/articles/s41...

Runaway inequalities are a fundamental challenge to meeting climate ambition. In a new study, we trace transboundary harms attributable to high wealth individuals worldwide - 🧵 by lead author @sarahschoengart.bsky.social 👇

🌎 The wealthiest 10% of the global population have been responsible for two-thirds of global warming since 1990, according to new research published in Nature Climate Change. Read more 🔗 iiasa.ac.at/news/may-202... @carlschleussner.bsky.social @ethzurich.bsky.social

NEW – Two-thirds of global warming since 1990 caused by world’s ‘wealthiest 10%’ ✍️ by @ayeshatandon.carbonbrief.org 💬 with comment from Sarah Schöngart @carlschleussner.bsky.social @zscheischlerjak.bsky.social @wimthiery.bsky.social Read here ➡️ buff.ly/0Se78bM

Very excited to announce that the call for abstracts for our @iiasa.ac.at overshoot conference is out. Join us to explore the eightfold path to manage climate risks of an overshoot world: overshootconference.org Abstract deadline: June 27.

In our new paper in @natcomms.nature.com led by Yuanlin Qiu, we identify an amplified increase in heat release from lakes, particularly in mid to high latitudes. Another sign of how lakes worldwide are affected by climate changes. www.nature.com/articles/s41...

I've put together a webpage with country-level charts that @glenpeters.bsky.social and I produce. Currently 89 countries, not all with same charts. More to come, including data downloads. Explore for yourself here: robbieandrew.github.io/country/

Climate change is not just a problem of physics but a crisis of justice #Climate

🌡️ Why is modeling heat waves important? 🔥 In this podcast, IIASA researcher @kornhuber.bsky.social breaks down the science behind modeling extreme heat waves, and why it's an important tool for protecting communities and shaping smarter policies. 🎧 open.spotify.com/episode/6TIQ...

Overshoot: A Conceptual Review of Exceeding and Returning to Global Warming of 1.5°C. Once we exceed 1.5°C, is it all lost? Can we get back to it from above? What risks would that avoid, and which ones not? Great collaboration with a range of IPCC authors! www.annualreviews.org/content/jour...

I've updated the Tidy GHG Inventories dataset, which is now complete for Annex I countries: doi.org/10.5281/zeno... This also shows the progress to date in countries submitting Biennial Transparency Reports under the Paris Agreement ⬇️

Read about our new work on 'net zero carbon debt' @carbonbrief.org 👇

NEW – Guest post: How to apportion ‘net-zero carbon debt’ if global warming overshoots 1.5C | @setupelz.bsky.social @robinlamboll.bsky.social @wimthiery.bsky.social @gidden.bsky.social @cjsmith.be @shonali-p.bsky.social Read here:

Scenarios Forum 2025: abstract submission deadline extended until 7 April scenariosforum.org/call-for-abs...

We describe how this debt is not only from overdrafters to underdrafters, but also from overdrafters to their own future generations (either already born or still to be born) who will be suffering more extreme events and climate harm as a result. (end) www.pnas.org/doi/10.1073/...

🌍 SAVE THE DATE! Excited to announce that we'll be hosting the first-ever Climate Overshoot Conference at @iiasa.ac.at from Sep 30th - Oct 2nd, 2025. Thrilled to bring this critical conversation to Laxenburg/Vienna. 1/ iiasa.ac.at/events/sep-2...

📢 New paper w/ G. Ganti @robinlamboll.bsky.social L. Grant @cjsmith.be @shonali-p.bsky.social @joerirogelj.bsky.social K. Riahi @wimthiery.bsky.social @gidden.bsky.social We examine a forward-looking measure to guide collective efforts in the era of climate overshoot: net-zero carbon debt. 🧵

CO2 removal (CDR) is both essential and controversial because side-effects can undermine mitigation ambition and sustainable development. As the European Scientific Advisory Board on Climate Change @esabcc.bsky.social we advise the EU on how to navigate CDR opportunities and risks. (1/n)

In Nature Climate Change, we show that a year above 1.5 °C signals that Earth is most probably within the 20-year period that will reach the Paris Agreement limit. @natclimchange.bsky.social

@ipcc.bsky.social WGI is hiring! two positions open in communications - really crucial jobs in IPCC! www.ipcc.ch/2025/02/06/h... lnkd.in/e993i2tp Head of Communications Communications and Graphic Designer @robertvautard.bsky.social

Important new paper reconciling gender (in)equality along future socioeconomic scenarios - these underpin _a lot_ of climate change mitigation research. 🧵 by lead author @andrijevic.bsky.social 👇

Considerations of fairness in mitigation efforts can get complicated (see earlier post), especially when we look beyond CO₂. In a new paper led by Mingyu Li, we propose an approach to address this, allocating a remaining 'global warming budget' to countries in line with the Paris Agreement’s goals.

Fairness has always been central to international climate talks, and its interpretation has been diverse, to say the least... Our new paper identifies key ‘entry points’ where crucial, often hidden, decisions are made that underlie fairness assertions in practice. iopscience.iop.org/article/10.1...

3 (out of 10) lessons for climate action: Strategies must consider each country’s HISTORY & ECONOMIC STRUCTURE to anticipate which approaches might work nationally & which are ‘exportable’. Public opinion has limited impact; it drives change only when people ORGANISE. cssn.org/news-researc...

Another thing: in the race to cut fossil fuel use ASAP—which we need to do—be wary of "solutions" that increase emissions from land-use change (2nd-biggest human source of CO2) or of other major greenhouse gases (eg methane, nitrous oxide). This can happen in food/ag due to its reliance on land. 1/

New dataset: Tidy GHG Inventories (zenodo.org/records/1451...) I extracted emissions data from the national inventories and put it into a tidy, consistent format. The kind of format that I would actually use.

NEW PAPER: The 2022 fossil fuel price jumps caused an oil and gas profit explosion. We show the US reaped the largest profit increase (USD 275bn) of any country. Big Oil claims this benefits the American people. In fact, 51% went to the richest 1%, only 1% to the bottom 50%. A 🧵

Great to see the first paper of the 2022 Como Summerschool on #CompoundEvents out. Great work @yinglintian.bsky.social et al. and great supervision @giorgiadc.bsky.social! @iiasa.ac.at @columbiaclimate.bsky.social @lamontearth.bsky.social @pik-potsdam.bsky.social

We have a new paper in ERSS: Are energy access programs pro-poor? Donor organizations claim programs reach the poor, directly or indirectly. We argue in most cases they don't. Programmes need clearer targeting, pro-poor subsidies & the right technologies. www.sciencedirect.com/science/arti...

Today on Volts: the insurance industry is the canary in the climate change coal mine. Now prices are rising, insurers are pulling out of whole states, & state budgets are straining to make up the difference. I talk with @kategordon.bsky.social about the whole mess. www.volts.wtf/p/climate-ch...

The model calibration paper for fair is now published in Geoscientific Model Development! 🎉 TLDR: how do we constrain a highly parameterised model to observational and assessed constrained ranges, with uncertainty? gmd.copernicus.org/articles/17/...

Many annoying things about this post from @mattyglesias.bsky.social, but to confine myself to one: "climate change will not wipe out humanity" is not a sufficient take on climate damages. Nothing of particular substance follows from that. It doesn't settle any argument.

Does anyone have a list of all national (state-owned) oil and gas companies and the country to which they belong? Is this reasonably complete en.wikipedia.org/wiki/Categor... ?

Happy Thanksgiving!

The International Court of Justice is working on an advisory opinion on the legal obligations of countries in preventing climate change. I helped a team of IPCC authors to prepare evidence for the court, which was delivered yesterday. www.icj-cij.org/sites/defaul... @pik-potsdam.bsky.social

Thanks for this, these kinds of updates are super helpful for us following from home this year. Back in the day, Twitter excelled in moments like this at the COPs. Great for bsky to be filling that gap.