🔥HOT OFF THE PRESS: Why the energy transition is disruptive, non-linear, hard to predict and often faster than expected. Our paper in Nature Reviews Clean Technology shows how feedback loops create virtuous and vicious cycles that can accelerate or block change. 🧵 www.nature.com/articles/s44...

For a decade, the Shared Socioeconomics Pathways #SSP are used for scenario research related to climate change mitigation. Now, GDP & population projections were updated by @iiasa.ac.at & the team at the #OECD, and the #ScenarioServices team set up a new interactive app to explore the scenarios!

One of most mind-boggling things about climate change is how much faster it is than planet can accommodate. It takes ~1,000 years for deep water to mix with surface (as Scott Denning puts it "The deep water does not know we are here yet!"), and some Earth processes that remove CO2 take 100,000 years

New discussion paper just dropped that’s taken shall we say a little work to get this far … essd.copernicus.org/preprints/es... please be kind. Not on an at all sensitive topic in the slightest.

diese NGO verteilt Solarmodule und Batterien in der Ukraine, damit Krankenhäuser und Menschen trotz des Krieges weiter Strom haben. Gute Sache, die man hier unterstützen kann: ukraine2power.org/en/#link-sol...

Ancient pine trees growing in eastern Spain have quietly recorded more than five centuries of Mediterranean weather. Analysis of tree rings clearly shows that todays storms and droughts are becoming more intense and more frequent than almost anything the region has experienced since the early 1500s.

If you think gas power is cheap, meet Keadby 2, the last CCGT gas plant built in Great Britain It opened in 2023, after 5yrs of development, at a cost of £350m Owner SSE says it would now cost 3.5x to build the same plant (~£1.2bn) 1/6

Considering the significant tone shift of Renew, the socialists, and the EPP, it seems that Europe has entered a new political equilibrium that will lead to a more forceful response against the United States

Atmospheric CO2 concentration increased by a record-high 3.7 ppm in 2024, mainly due to the 2023/2024 El Nino conditions weakening the land sink. The 2025 projection is for a rise of 2.3 ppm, close to the decadal mean of 2.6 ppm, suggesting the land sink has returned to its pre-El Nino level. 12/

📢Global Carbon Budget 2025📢 Fossil CO2 emissions continue to rise in 2025 while the terrestrial carbon sink recovers to pre-El Niño strength. The key findings are covered in two reports this year: * ESSDD (preprint): essd.copernicus.org/preprints/es... * Nature: www.nature.com/articles/s41... 1/

Controversial! I've always argued that 5-story wooden buildings weren't anything special 100 yrs ago. In Germany, we've had to fight to make it happen again, so it leads to dispute. ...A few examples. Starting with 'Alter Bau'. Yes, it's just called 'Old Building'. www.geislingen.de/de/gaeste/ku...

2025 was the hottest year on record for ocean heat content. Unfortunately, we now say this every year. 🥹 "In addition to setting a new record in 2025, the global ocean continues to show sustained and intensified warming." + #OpenAccess Study: doi.org/10.1007/s003... + Data: www.ocean.iap.ac.cn

Wochenendhörempfehlung: Starkes DLF-feature zur Politik und Zeit: wie geht die Gesellschaft mit der Hyperbeschleunigung durch den Kapitalismus um? Wie werden pol. Entscheidungen unter Zeitdruck getroffen? Und: ändert sich im #Kollaps die Zeitlichkeit von Politik fundamental?

5/This is part of what @segoddard.bsky.social and I have called a neo-royalist order. Elite cliques use economic and material interdependencies to bolster their power. Think elite interests (Trump and his inner circle) not national interests. www.cambridge.org/core/journal...

Nullschool weather app for mobile phones...!

„especially the rise of industry-scale storage units looks set to “fundamentally transform the functioning of Germany’s electricity system.” 👆

Made a pilgrimage to 2 ghosts of sea level past & future in Florida, from last time global temp was similar to today 120,000 years ago: an outcrop of oolite in Miami from when it was a sandy shoal under the waves, and in Windley Key a fossil coral reef that now ominously sits 20 feet above sea level

For nonlawyers, it’s worth noting that statements like this have—as a formal matter—important legal effects as a matter of international law. If such statements are *not* made, and in volume, future arguments that Trump’s invasion sets a legal precedent will stand on much firmer legal ground.

"If we are going to go all in on a fossil fuel future in the U.S., it probably would be good to check if we have the fossil fuels to do that." Geology strikes back

Hydrogen does not directly warm the climate, but interacts with OH to extend the life of CH4. "More hydrogen means fewer detergents [OH] in the atmosphere, causing methane to persist longer &, therefore, warm the climate longer" phys.org/news/2025-12... Article: www.nature.com/articles/s41...

✅ May 2025: Landmark adoption of the #PandemicAgreement. Countries adopted the first Pandemic Agreement at the 78th World Health Assembly. The agreement fosters international collaboration and commits to ensuring more equitable access to vaccines, medicines, and diagnostics.

Im Auftrag des Umweltbundesamtes UBA haben haben wir mit GWS und E3-Modelling internationale Wechselwirkungen zwischen EU-ETS und einem CO2-Grenzausgleichssystem (CBAM) analysiert (inkl. Paper zu CO2 Preisen in IAMs). Die Ergebnisse sind jetzt öffentlich. www.gws-os.com/de/die-gws/n...

Dein Klick zählt: Schrottfahrräder über Ordnungsamt Online melden! 🚲📲 Über 700 Räder wurden in Mitte schon entfernt – gemeinsam schaffen wir Platz, mehr Sicherheit und barrierefreie Wege. Entdeckt ihr ein Schrottrad? Einfach über melden und mithelfen!➡️ sohub.io/3j1x

Closing out my year with a journal editor shocker 🧵 Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...

The Global Carbon Project has just published the most comprehensive Global Hydrogen Budget to date. H2, although not a GHG, has an indirect Global Warming Potential 37 times more potent than CO2. Carbon Brief: www.carbonbrief.org/hydrogen-emi... Research paper: www.nature.com/articles/s41...

Hansen predicts global temperature will reach a record +1.7°C in 2027. In addition to Earth’s heating rate of 0.2°C per decade, this implies an acceleration by 0.1°C per decade since 2016, likely from (“one-time only”) aerosol effects, ie shift to cleaner and less fuels. mailchi.mp/caa/global-t...

Die erneuerbaren Energien sind der Durchbruch des Jahres laut Science Magazine: Wind und Solar wachsen in noch nie erreichtem Tempo. 2025 war das erste Jahr, in dem weltweit mehr Strom aus erneuerbaren Energien als aus Kohle erzeugt wurde.

🚨 Our new paper is out! First study focusing on African sea level rise from 1993 to present 🌊🌍 Sea levels accelerated 4.5× since the 1990s, from 0.96 to 4.34 mm/yr. 2023 broke records across 40% of African waters. Thread ⬇️ 📖 doi.org/10.1038/s43247-025-02965-z

「Progress」out—looking intriguing and challenging, by @smillermcdonald.bsky.social. Much looking forward to reading a solid social science framework, which most literature on climate policy lacks, that aims to develop possible alternatives to the idea of progress. bookshop.org/p/books/prog...

As this chart (from IPCC AR6 technical summary) shows, global temperature increase has closely tracked cumulative CO2 emissions. As of 2024 the world has emitted about 2750 Gt CO2.

Several large solar PV and battery projects are being planned in Brandenburg. How do utilities wish to make the economics of fossil power plants work going forward? www.rbb24.de/content/rbb/...

“Today is a defining moment for our country,” @mtosterholm.bsky.social, a public health expert at the University of Minnesota, said. “We can no longer trust federal health authorities when it comes to vaccines.” 🧪 #giftlink www.nytimes.com/2025/12/05/h...

Our infrastructure isn’t ready for what’s coming.

The biggest misunderstanding of Carbon Dioxide Removal (CDR), IMHO, is that many assume it is a replacement for emissions reductions. As in, more CDR, less emission reductions. No. Emissions need to go down as fast as possible, even faster, no matter how much (~feasible) CDR you have. 2/

New research published today in @nature.com shows the Southern Annular Mode (SAM) – the Southern Hemisphere’s most influential climate driver – has reached its most positive state in more than a millennium. Read the Nature paper: www.nature.com/articles/s43...

For Europe (excluding the UK), BA.3.2.* is holding a strong growth advantage of 4.6% per day (32% per week) over XFG.* "Stratus". At that pace, any crossover looks to be around the holiday season. 🧵

Usually I'd encourage you to find another place to buy the book, but Amazon is selling the BLOOD IN THE MACHINE ebook for $2.99 at what is certainly a loss, so by all means, get a copy for cheap www.amazon.com/Blood-Machin...

PJM is the regional grid serving 67 million customers in 13 states

It’s Not Just the Rock—It’s the Soil (And it holds on tight) -- Our latest greenhouse study with data from our greenhouse experiments is now available on EGUSphere as a pre-print.

“The entire financial system, including government bonds & mortgages, is premised on the idea that tomorrow will look something like today. In a world that’s 3 degrees warmer, it assuredly will not.” - One of the aspects making climate policy more important, paradoxically, the more publicly ignored

Wrote about how climate change is bad www.theatlantic.com/science/2025...

“Third, we need new ways to remove an additional 5 billion tonnes of carbon dioxide from the atmosphere each year, and store it safely in the ground.” 👀

"Warming is going to exceed 1.5°C. We are heading into overshoot within the next few years": a stark message by PIK Director Rockström & James Dyke in @theconversation.com. Yet, science shows a way back: fossil-fuel phase-out, nature protection, carbon removal. theconversation.com/the-world-lo...

Here's the latest variant picture with a global scope, to early November. BA.3.* (mostly BA.3.2.2) has started showing significant signs of growth. Recent samples have mostly been reported from Germany and Australia. #COVID19 #SARSCoV2 #Global #BA_3_2 #XFG #Stratus 🧵

Was mach ich in einer Stadtwohnung wenn ich mir das Gas oder Fernwärme nicht leisten kann? Nicht heizen? Pro Mensch und Tag werden 3l Feuchtigkeit abgegeben. Die schlägt sich an kalten Stellen nieder. Vorsicht, da entsteht eine Schadensersatzpflicht. www.stuttgarter-zeitung.de/inhalt.was-p...

We had only recently passed 350 ppm when I started my PhD in Earth System Science, already a value understood to be dangerous and a threat to society. And now, 33 years and 30 COPs later, we are at a value that is unprecedented for the past 3 million years and maybe even the past 8 million years.

Total anthropogenic CO2 emissions – the sum of fossil & land-use change emissions – have grown more slowly in the past decade1 (0.3% per year on average), compared to the previous decade (1.9% per year). The growth in fossil emissions is offset by the decrease in land-use change emissions. 8/

1.5C scenarios are dramatic, but are they useful? Paris puts the control in the hands of countries, with the goal to achieve collective outcomes. Each country needs a transformation pathway that works for them, contributes to collective goals, & makes them stronger. drilled.media/news/cop30-g...

Klaus Scharioth, remarkable diplomat and teacher. Worth reading: fletcher.tufts.edu/news-events/...

A Sharon Begley byline, almost 5 years after her death. Upon hearing the news James Watson had died, a STAT reporter said in our Slack, "I wish I could read what Sharon would have written." Incredible news: Sharon in fact did pre-write a Watson obit. And it is masterful and excoriating. 🧪🧬🧫