Reposted by Robert McSweeneyZeke Hausfather @zekehausfather.com · 21/09/2026This year's El Niño event is moving into record territory, with the daily Oceanic Niño Index (ONI) tying the record previously set during the 2015/2016 super-El Niño. My latest over at Carbon Brief: www.carbonbrief.org/... 7329163
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 21/09/2026NEW – Analysis: ‘Super El Niño’ reaches ‘remarkable’ all-time record ✍️ Written by @zekehausfather.com Read here: buff.ly/4a9XUAK 314678
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 08/09/2026NEW – Q&A: What can – and cannot – be said about global warming’s role in the 2026 Himalayan floods | @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org @giulianaviglione.bsky.social @daisydunne.carbonbrief.org Read here: buff.ly/XeMOzXR 11712
Robert McSweeney @rtmcswee.carbonbrief.org · 19/08/2026As El Niño is going to be in the news A LOT over the coming months, we felt it was time for a new @CarbonBrief explainer. And I think it's fair to say that the maps and figures in this look amazing ⬇️ 1287
Reposted by Robert McSweeneyDaisy Dunne @daisydunne.carbonbrief.org · 18/08/2026Why is the world experiencing a ‘super El Niño’, how will it reshape weather and is it linked to climate change? These are all questions answered in a new explainer by me and @rtmcswee.carbonbrief.org, ft lots of interactive charts by our visuals team interactive.carbonbrief.org/el-nino-expl...interactive.carbonbrief.orgExplainer: How the ‘super El Niño’ will reshape the world’s weatherThe world is currently experiencing what is expected to become the strongest El Niño on record – dubbed a “super El Niño” by many. 0127
Robert McSweeney @rtmcswee.carbonbrief.org · 13/08/2026How river flows in England have changed between March and August this year: Some have gone from "exceptionally high" to "exceptionally low" in just 5 months. 2148
Reposted by Robert McSweeneyDamian Carrington @dpcarrington.bsky.social · 11/08/2026- @carbonbrief.org continues to chronicle the very normal state of right wing politics / media in the UK 12511
Reposted by Robert McSweeneyZack Labe @zacklabe.com · 10/08/2026We have very unfortunate news to share today... 😢 I've been an author for this report since 2020, and we just celebrated our 20th anniversary edition last year. 561354619
Robert McSweeney @rtmcswee.carbonbrief.org · 31/07/2026It seems to be factcheck season! Here's our latest on claims that 2026 is a quiet year for wildfires in Europe ⬇️ 021
Robert McSweeney @rtmcswee.carbonbrief.org · 27/07/2026ICYMI… Last week, the Daily Telegraph and others claimed that extreme European heatwaves had been "caused" by a fall in air pollution. Scientists told @carbonbrief.org why this is "wrong" and how it was a "misleading" framing of the underlying research. ⬇️ 0178
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 24/07/2026NEW – Factcheck: No, Europe’s heatwaves are not being ‘caused’ by declining air pollution ✍️ written by @rtmcswee.carbonbrief.org 💬 with comments from Bjorn Samset, @erichfischer.bsky.social and Pedro Roldan-Gomez Read here ➡️ buff.ly/ukIO2fIbuff.lyFactcheck: No, Europe’s heatwaves are not being ‘caused’ by declining air pollution - Carbon BriefScientists tell Carbon Brief that the framing of heatwaves being “caused” by declining air pollution is “wrong”. 45524
Robert McSweeney @rtmcswee.carbonbrief.org · 26/06/2026We've just published this... and then had to update it immediately as the UK's June temperature record has been broken AGAIN. 010
Reposted by Robert McSweeneyLeo Hickman @leohickman.carbonbrief.org · 25/06/2026Seems to be a lot of selective memory in UK's right-wing newspapers about schools not closing during the 1976 heatwave. I just checked and, yes, many schools did close early as well as allow parents to "keep their children at home if they wish". This clipping from London Evening News, 29 June 1976 34835286
Reposted by Robert McSweeneyLeo Hickman @leohickman.carbonbrief.org · 22/06/2026After 18 months of R&D with a team of specialist academics, I'm VERY excited to say that @carbonbrief.org has just launched 'Project Cosmos'... ...the world's largest database of climate research Our hope is this becomes a major new resource interactive.carbonbrief.org/cosmos/index...interactive.carbonbrief.orgProject Cosmos – the world’s largest database of climate change research 8296126
Robert McSweeney @rtmcswee.carbonbrief.org · 08/06/2026Sign up now! Carbon Brief is launching “Cited”, a new fortnightly newsletter all about climate research. Cited will capture the latest papers, preprints and media coverage. Most importantly, it’s entirely free. The first edition is coming TOMORROW! bit.ly/4dVGEbz 093
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 19/05/2026NEW – Factcheck: Trump’s false claims about the IPCC and ‘RCP8.5’ climate scenario | @rtmcswee.carbonbrief.org @ceciliakeating.carbonbrief.org @hausfath.bsky.social Read here: buff.ly/727LWJo 34627
Reposted by Robert McSweeneyEd Hawkins @edhawkins.org · 08/05/2026Spiralling global temperatures (1850-2026) It is exactly 10 years since I first put this animated graphic of changes in global temperature online. #ClimateSpiral It instantly went viral. People watched it over and over again. It still offers the power to shock a decade on. 6726171499
Robert McSweeney @rtmcswee.carbonbrief.org · 04/05/2026I’m at #EGU26 all this week for @carbonbrief.org. Do stop me and say hi – especially if you’ve got some interesting research coming! 082
Reposted by Robert McSweeneyKen Caldeira @kencaldeira.com · 29/04/2026This @carbonbrief.org explainer on the Atlantic Meridional Overturning Circulation (AMOC) is very good. Useful for experts and novices alike. Kudos to @ceciliakeating.carbonbrief.org, @tomoprater.carbonbrief.org and @kerryanncleaver.bsky.social. interactive.carbonbrief.org/amoc-explain...interactive.carbonbrief.orgAMOC: Is global warming tipping key Atlantic ocean currents towards ‘collapse’?The AMOC is under threat from human-caused climate change, as warming seas, melting ice and increased rainfall upset the temperature and salt balance of the North Atlantic. 710957
Reposted by Robert McSweeneyPeter Stott @stottpeter.bsky.social · 28/04/2026There's a terrific new article by @carbonbrief.org on the Atlantic Meridional Overturning Circulation with some great animations. Strongly recommended. I've been reading it ahead of giving a lecture on the risks of climate change tomorrow. interactive.carbonbrief.org/amoc-explain...interactive.carbonbrief.orgAMOC: Is global warming tipping key Atlantic ocean currents towards ‘collapse’?The AMOC is under threat from human-caused climate change, as warming seas, melting ice and increased rainfall upset the temperature and salt balance of the North Atlantic. 16944
Robert McSweeney @rtmcswee.carbonbrief.org · 24/04/2026So much effort has gone into this article – both in terms of the words and the visualisations. It's great to have this out in the world – well done, Cecilia, Tom and Kerry! 👏 Please do read and share ⬇️ 083
Reposted by Robert McSweeneySimon Evans @drsimevans.carbonbrief.org · 17/04/2026A HUGE, narrative-breaking moment for the UK car market New EVs are now cheaper than petrol cars on average, says Autotrader Last yr CCC said price parity was due by 2028 – and it's already here And EVs are already MUCH cheaper to run than petrol 281103404
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 27/03/2026NEW – ‘Very alarming’ winter sees Arctic sea ice hit record-low for second year running | @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org w/ comment from @zacklabe.com Read here: buff.ly/Vu1TaIF 05742
Reposted by Robert McSweeneyAnika Patel @anikanpatel.carbonbrief.org · 06/03/2026NEW - Carbon Brief's mega-analysis of China's new five-year plan just dropped! We dig into what the plan means for carbon emissions, renewable energy, cleantech competition, critical minerals & more To find out everything you need to know about the new policy, click the link in the comments ⬇️ 186
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 06/03/2026NEW – Pace of global warming has nearly doubled since 2015, study says ✍️ @ayeshatandon.carbonbrief.org Read here ⬇️carbonbrief.orgPace of global warming has nearly doubled since 2015, study says - Carbon BriefAn acceleration in human-caused global warming could see the Paris Agreement’s 1.5C limit breached before... 3143118
Robert McSweeney @rtmcswee.carbonbrief.org · 02/03/2026This past winter was the 8th wettest on record for England, according to provisional stats from the @metoffice.gov.uk It was the wettest winter on record for three counties: West Midlands, Cornwall and Leicestershire www.metoffice.gov.uk/about-us/new... 040
Reposted by Robert McSweeneyTim Osborn @timosbornclim.bsky.social · 25/02/2026Well worth watching this interview from January of UEA's Ben Santer by @rtmcswee.carbonbrief.org for @carbonbrief.org. Heartfelt and moving, while also informative about Ben's views on climate action and climate science in the current geopolitical circumstances. www.carbonbrief.org/prof-ben-san...carbonbrief.orgProf Ben Santer: Trump administration is ‘embracing ignorance’ on climate science - Carbon BriefIn an interview with Carbon Brief, Santer says the Trump administration is “engaged in a systematic attempt to dismantle climate science” 1135
Reposted by Robert McSweeneySimon Evans @drsimevans.carbonbrief.org · 27/01/2026HUGE moment for the EU car market as battery EVs overtake petrol cars for the first time ever But there's no "natural" demand for EVs amirite? Article by @mollylempriere.carbonbrief.org www.carbonbrief.org/analysis-evs... 8456163
Reposted by Robert McSweeneyLeo Hickman @leohickman.carbonbrief.org · 15/01/2026Important and timely wide-ranging interview with one of the world's most influential climate scientists. Some of what he tells @rtmcswee.carbonbrief.org is, frankly, breathtaking. A call to action for all scientists, not just those focused on climate change. 03928
Robert McSweeney @rtmcswee.carbonbrief.org · 15/01/2026For such a softly spoken guy, Ben doesn't hold back on the Trump administration: "Insane. That’s the only word for it. Removing our ability to measure and monitor how the world around us is changing, makes no sense whatsoever." 042
Robert McSweeney @rtmcswee.carbonbrief.org · 13/01/2026Here's our annual look at the most talked-about climate research of the previous year: 040
Reposted by Robert McSweeneyCaroline Lucas @carolinelucas.bsky.social · 13/01/2026Outrageous bare-faced lies - it’s extraordinary what the right wing press can get away with. Thank you @drsimevans.carbonbrief.org for such a thorough debunking 918276
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 09/01/2026NEW – Q&A: What Trump’s US exit from UNFCCC and IPCC could mean for climate action | @daisydunne.carbonbrief.org @mollylempriere.carbonbrief.org @orladwyer.carbonbrief.org @joshgabbatiss.bsky.social @rtmcswee.carbonbrief.org Read here: buff.ly/Mkjsh61 11315
Reposted by Robert McSweeneyCarl Schleussner @carlschleussner.bsky.social · 23/11/2025A fantastic effort from the @carbonbrief.org team pulling this together. A great resource summarising major outcomes and process at COP30. A must read 👇👇👇 And just a day after the gavel came down. Impressive. I bet next year, they'll beat the COP closing plenary :) 11710
Robert McSweeney @rtmcswee.carbonbrief.org · 11/11/2025Here's our annual analysis of who is going to COP: Top story: no US delegation for the first time in COP history Also: ~56,000 people registered, so no big drop-off despite accommodation issues in Belém (Caveat: these are provisional figures) Also also: most "virtual" delegates ever #COP30 274
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 07/11/2025NEW – Ongoing failure to agree AR7 timeline is ‘unprecedented’ in IPCC history | @ayeshatandon.carbonbrief.org @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org Read here: buff.ly/rSMdzNfbuff.lyOngoing failure to agree AR7 timeline is ‘unprecedented’ in IPCC history - Carbon BriefGovernments have, once again, failed to agree on a timeline for the Intergovernmental Panel on Climate Change (IPCC) seventh assessment cycle (AR7) 197
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 08/10/2025NEW – Experts: The key ‘unknowns’ of overshooting the 1.5C global-warming limit | @ceciliakeating.carbonbrief.org and @rtmcswee.carbonbrief.org Read here: buff.ly/yPWMH59buff.lyExperts: The key ‘unknowns’ of overshooting the 1.5C global-warming limit - Carbon BriefOn the sidelines of a conference, Carbon Brief asked a range of experts what they consider to be the key “unknowns” around overshoot. 22418
Robert McSweeney @rtmcswee.carbonbrief.org · 08/10/2025Last week, @ceciliakeating.carbonbrief.org and I attended the first-ever conference on climate "overshoot" in Vienna. Here's our summary of the wide-ranging discussions. (Bearing in mind we were two journalists covering 8 conference themes...!) 096
Reposted by Robert McSweeneySimon Evans @drsimevans.carbonbrief.org · 08/10/2025FACTCHECK: Claire Coutinho claims UK gas power only costs £55/MWh… …but she is ignoring a few small details: 🤫 Gas prices always rise in winter 🤫 Gas plants cost money to build 🤫 CO2 causes economic damages THREAD with receipts 1/8 56039
Reposted by Robert McSweeneySimon Evans @drsimevans.carbonbrief.org · 19/09/2025Yet more embarrassment for the Times, which has printed a ludicrous – and almost certainly false – line about windfarms being “dismantled” near Trump’s Scottish golf course But why pick up the phone, as I did, when you can print nudge-nudge rumours instead? 1/ 1010549
Robert McSweeney @rtmcswee.carbonbrief.org · 19/08/2025Really interesting guest post from @markengland.bsky.social unpacking why Arctic sea ice loss has slowed and how "climate models clearly show that such periods are expected parts of climate variability" ⬇️ 0137
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 14/08/2025NEW – Factcheck: Trump’s climate report includes more than 100 false or misleading claims | @ayeshatandon.carbonbrief.org @leohickman.carbonbrief.org @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @tomoprater.carbonbrief.org Read here: buff.ly/AvcB7Aw 7230134
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 10/07/2025NEW – Media reaction: The 2025 Texas floods and the role of climate change ✍️ @joshgabbatiss.bsky.social @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org Read here ⬇️ www.carbonbrief.org/media-reacti...buff.lyMedia reaction: The 2025 Texas floods and the role of climate change - Carbon BriefAt least 120 people have died after a devastating flash flood swept through homes and... 077
Reposted by Robert McSweeneySimon Evans @drsimevans.carbonbrief.org · 10/07/2025MEDIA STUDIES: How the Times bungled its coverage of the OBR report on climate change & UK govt debt Yesterday's newspaper reported a major shift: "The OBR now thinks…net-zero will have a far more damaging impact on borrowing…" In fact, the OBR had said the opposite! 1/6 12214133
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 09/07/2025NEW – Experts: Which climate tipping point is the most concerning? | @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org Read here: buff.ly/LkitgK7 34319
Reposted by Robert McSweeneySimon Evans @drsimevans.carbonbrief.org · 08/07/2025NEW: Getting to net-zero will be much cheaper than thought for the UK – and unchecked global warming far more costly, says OBR Quick piece / thread with 4 key charts showing, yet again, why climate action is far less costly than inaction 🧵 www.carbonbrief.org/... 1/6 10249167
Robert McSweeney @rtmcswee.carbonbrief.org · 08/07/2025Carbon Brief was in Exeter last week for the Global Tipping Points conference. There was a lot packed in to the 4-day event and we've summarised some of the talks and talking points here ⬇️ 197
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 04/07/2025What’s happened this week in climate change? DeBriefed | Trump ‘megabill’ guts clean energy; Europe’s record heat; Scientists discuss ‘most worrying’ tipping points ✍️ @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org @ceciliakeating.carbonbrief.org ➡️ buff.ly/4G49jHj 22015
Reposted by Robert McSweeneyCarbon Brief @carbonbrief.org · 04/07/2025NEW – Chart: Trump’s ‘big beautiful bill’ blows US emissions goal by 7bn tonnes | @joshgabbatiss.bsky.social Ho Woo Nam Read here: buff.ly/l700teP 87546
Reposted by Robert McSweeneyAdam Vaughan @adamvaughan.bsky.social · 04/07/2025NEW Nigel Topping chosen as new chair of @thecccuk.bsky.social, pending formalities Will bring experience from business world & UN climate talks to the role Follows years-long delay after former Tory minister Lord Deben quit as chair and @piersforster.bsky.social steered ship in interim capacity 31511