Christopher Callahan
@ccallahan45.bsky.social
climate scientist: extreme heat, health, attribution, climate in the courts. heat wave is two words. iuclimateandsociety.com
This is what every one of these conversations sounds like
Prof Christina Pagel@chrischirp.bsky.social · 5d ago🧵On @thenewsagents.co.uk yesterday, school closures and the lab leak theory were offered as two examples of legitimate questions that were hard to ask. Both have in fact been asked constantly since 2020. But here's a thread on why I think they were wrong and dangerous on school closures 1/12
about half of centrists and the center-left for some reason concluded that climate change was passe hippie bullshit that doesn't matter, and we're about to learn how wrong that was, the hard way prospect.org/2026/07/28/c...
The Strongest El Niño in History Is Coming. Get Ready. - The American Prospect
Donald Trump has no ideas, but America is ready for a U-turn on climate change.
prospect.org
It's not that climate change is "worse than expected". It just feels worse when it happens to *you*
🚴♂️Today #TourDeFrance races into #Paris to finish this years' edition. We have seen stages shortened due to extreme heat and wildfire – a direct impact of #ClimateChange 🧵1/4
I co-sign this great summary from @dereklowe.bsky.social . The goal is to destroy academic science, and these are the reasons. And all the “gold standard” and “needs reform” and “not high risk” stuff is transparent bullshit to hide the ball on what they are doing.
Derek Lowe@dereklowe.bsky.social · 2w agoThoughts on the various Trump administration proposals to revamp US science funding - and what they all have in common:
I was pretty skeptical of the breathless "super El Niño" coverage earlier this year but we're past the spring predictability barrier at this point and this kind of plot is just breaking my brain
James Dinneen@jamesdinneen.bsky.social · 2w agoIt's not quite "gobsmackingly bananas" but monster forecasts for the record El Nino brewing the Pacific Ocean get pretty close. Here's what to make of it in my first for @nature.com: 🧪 www.nature.com/articles/d41...
It's not quite "gobsmackingly bananas" but monster forecasts for the record El Nino brewing the Pacific Ocean get pretty close. Here's what to make of it in my first for @nature.com: 🧪 www.nature.com/articles/d41...
This El Niño is set to be the largest on record by a ‘mind-blowing margin’
Forecasters predict that the monster climate pattern will combine with global warming to push global temperatures in 2027 to new heights.
nature.com
my favorite is still the one I got that claimed that it was from Reese Witherspoon, who was happy to announce that her book club was taking a hard pivot from light fiction to instead focus on academic works of history about nuclear weapons
If you want to better understand Canadian wildfires — and the causes of the climate change that make conditions for such disasters so much worse — I recommend this wonderful book by @johnvaillant.bsky.social www.penguinrandomhouse.com/books/554938...
Fire Weather by John Vaillant: 9780525434245 | PenguinRandomHouse.com: Books
PULITZER PRIZE FINALIST • A NEW YORK TIMES TOP TEN BOOK OF THE YEAR • FINALIST FOR THE NATIONAL BOOK AWARD IN NONFICTION • FINALIST FOR THE PEN/GALBRAITH AWARD FOR NONFICTION...
penguinrandomhouse.com
Hi Bluesky. I’m officially asking my network for help. It’s been a tough 10 months on the job market, and I am actively seeking policy and policy-adjacent roles in agricultural emissions, greenhouse gas mitigation, air quality, and biotechnology regulation. 🧵
New paper out in @pnas.org: this year’s western U.S. snow conditions were pretty dismal, but to what extent was this snow drought due to climate change? Paper: www.pnas.org/doi/10.1073/... (with Marianne Cowherd, Stefan Rahimi, Yuhong Ye) Thread:👇
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
pnas.org
"Lack of imagination" regarding the ways in which things can go wrong plus overconfidence in the infallability of technofixes is a dangerous combination.
Christopher Callahan@ccallahan45.bsky.social · 2mo agoAnyone going to AGU 2026 - submit to our session! GC036: Data-driven approaches to quantifying climate impacts on human well-being. If your research deals with the causal effects of climate variability + change on people, we want to hear about it. agu.confex.com/agu/agu26/pr...
"Jonas Vingegaard is a rider who has known pain, and now he knows it anew. There's nothing to feel as he exits the race but sadness...I don't know if this is the end of Vingegaard as a Tour competitor, but I do know that he's done enough to earn our admiration forever."
Defector@defector.com · 2w agoJonas Vingegaard felled yet again by the cruelty of his sport: defector.com/jonas-vingeg...
“You read that right: The cost of climate-worsened wildfire smoke alone is larger than what earlier studies said every other estimated cost of climate change would be, combined.” heatmap.news/daily/worryi...
What Worries Me Most About This Wildfire Smoke
We didn’t know days like this could happen. Then we learned how bad they really are.
heatmap.news
senior male academics giving a conference paper, after being shown the "one more minute" sign
Erin Dwyer aka Ginger Is A Construct@erindwyer.bsky.social · 2w agoTime keeping is my passion.
Republicans threatening tariffs on Canada over wildfire smoke and gloating about Europeans dying because they don't have air conditioning are really bad omens for what happens as the climate crisis becomes undeniable and goes unexplained
A reminder: The US, by being the largest historical CO₂ emitter, has caused $10 trillion in global climate damage since 1990. A quarter of this impact is felt domestically, but it disproportionately affects poorer countries.
US has caused $10tn worth of climate damage since 1990, research finds
US, top carbon emitter in history, has ‘a lot of responsibility’ for causing ‘substantial’ harm globally, scientist says
theguardian.com
Latest on the beat: National Academies yesterday released a much-anticipated report on extreme event attribution science. Our story unpacks the legal battles that responses to the review — already heavily scrutinized in the run-up to its release — are now intensifying: www.eenews.net/articles/new...
New climate report adds fuel to billion-dollar legal fight
Groups on both sides of the political spectrum are using a National Academies review of attribution science to score points ahead of a landmark Supreme
eenews.net
Chelsea Harvey@chelseaeharvey.bsky.social · 3w ago@lesleyclark.bsky.social's 🔥 profile of Roger Worthington, one of the most fascinating figures in climate litigation. Latest in our series on conservative efforts to undermine climate lawsuits/discredit the science informing them (see Pt. 1 by @corbinhiar.bsky.social👇) www.eenews.net/articles/he-...
NEW – Q&A: Europe’s May and June heatwave deaths – and how they were counted ✍️ @ceciliakeating.carbonbrief.org 💬 with comments from @ccallahan45.bsky.social @gkonstantinoudis.bsky.social and Antonio Gasparrini Read here: buff.ly/0yi6jSu
Q&A: Europe’s May and June heatwave deaths – and how they were counted - Carbon Brief
Recent weeks have seen a flurry of reports from public health authorities and scientists that...
buff.ly
So far this year we've had: the warmest winter on record in the mountain west, a record-shattering heat wave in Europe, once in a thousand year rainfall and flooding texas and forest fire smoke blanketing the mid west and the north east. Feels like something's going on with the climate!
Seriously, though, both heat and smoke extremes are major killers. Based on Ou et al 2026 and Climate Impact Lab work, heat- and smoke-related mortality are dominant among the quantifiable direct contributors to the US social cost of carbon
Valuing wildfire smoke–related mortality benefits from climate mitigation | PNAS
Human-induced climate change has increased wildfire risks, associated air pollution, and health damages in North America. Despite its large potenti...
pnas.org
Compound heat wave-smoke-explosive diarrhea extreme event
Marisa Kabas@marisakabas.bsky.social · 3w agoi cannot handle canadian wildfire smoke and the threat of diarrhea lettuce at the same time
Heat waves like the one in Europe last month kill a lot of people. Figuring out how many, however, can be complicated. @jeva.bsky.social explains what makes heat deaths so tricky to count: heatmap.news/climate/heat...
Why Heat Waves Are Tricky Killers
Deciding what counts as a heat death is more difficult than it sounds.
heatmap.news
🚨reporters working on stories about the NAS extreme event attribution report 🚨 DO NOT FRAME ANY STORY AS "CAN WE BELIEVE EXTREME EVENT ATTRIBUTION RESEARCH?" THE ACTUAL STORY IS: FOSSIL-FUEL INTERESTS ARE WETTING THEIR PANTS ABOUT THIS AND WILL DO ANYTHING TO TRY TO STOP IT.
With all the July model runs now in, it is very likely that 2026 will see the largest El Niño event since records began in the late 1800s – and potentially by a truly mind-blowing margin. The median estimate is now 3.6C, roughly 0.8C hotter than the prior record (2.75C). www.theclimatebrink....
