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Gernot Wagner

@gwagner.com

Climate economist, Columbia https://gwagner.com It’s pronounced juggernaut without the jug.

created August 4, 2023

21,305 followers 1,928 following 2,101 posts

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Posts

Profile picture Kate Marvel (@drkatemarvel.bsky.social) reposted

Fun fact: this would be true if we lived on Pluto

3/9/2025, 3:58:41 PM | 144 28 | View on Bluesky | view

Profile picture James Fallows (@jfallows.bsky.social) reposted

Statement tonight from Alan Garber, 31st president of Harvard. Good for him. Good for Harvard. Good for standing up to defend "core values of American higher education." And (again) what about all those "Harvard about to cave" stories? Main point: Worth reading what Garber says.

Statement from Alan Garber about ruling affirming
4/9/2025, 1:24:04 AM | 1933 509 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Ah yes, there's that — a DEMOCRAT-controlled HELLHOLE, no less.

4/9/2025, 12:39:51 AM | 1 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Timeline cleanse, Astor Place, NYC

3/9/2025, 10:59:47 PM | 11 2 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

PS: Skip whatever EPA is putting up instead and e.g. check out interactive.carbonbrief.org/doe-factchec... on the DOE report used in support of the Trumpian argument that climate poses no social cost.

3/9/2025, 9:43:17 PM | 8 7 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

I guess the official US Social Cost of Carbon is now $404.

404 error page on EPA.gov's Social Cost of Carbon website
3/9/2025, 9:42:40 PM | 39 8 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

2 kids going to 2 different schools, 2 parents going to jobs on different sides of town City × [2🛴 + 2🚲] = #freedom no car can provide

2 kids shooting 2 bikes + 2 scooters
2/9/2025, 12:52:46 PM | 19 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

…thus necessitating journalists' reliance on experts for such warnings, lest the headline itself is perceived as partisan. Rinse, repeat.

2/9/2025, 11:29:48 AM | 3 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

This really says it all: journalism relies on experts to warn when expertise is under threat, at once justifying the Right's assault on science and making the defense of science a partisan project

NYT A1:
2/9/2025, 11:04:33 AM | 155 40 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

😔

2/9/2025, 10:59:32 AM | 0 0 | View on Bluesky | view

Profile picture Nicholas Grossman (@nicholasgrossman.bsky.social) reposted

If a few health professionals say something you don't like, all said it and we should destroy the CDC. If a few students say something you don't like, all higher ed said it and we should end academic freedom. If the president and his party does something, that's one guy spouting off, let it go.

1/9/2025, 6:09:45 PM | 557 107 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Point of comparison: school pickup in a DEMOCRAT-controlled urban HELLHOLE (The masks will give away that this was 3 years ago. Turns out it's such routine, we don't exactly take daily videos.)

1/9/2025, 11:16:50 PM | 20 3 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Car brain is a disease

1/9/2025, 11:03:43 PM | 70 16 | View on Bluesky | view

Profile picture LegraLeGra (@atthenius.bsky.social) reposted reply parent

No. Seriously. After doing a of collapse for my PhD, I absolutely think *** this is the least of our worries *** For future climate change. Distraction from actual Insane amounts of rain Heat waves Storm surges Wind storms Heat heat heat Fires

31/8/2025, 7:19:48 PM | 8 1 | View on Bluesky | view

Profile picture Adam Kucharski (@adamjkucharski.bsky.social) reposted

Results so stunningly clear they inspired this classic xkcd (xkcd.com/2400/):

1/9/2025, 7:32:03 PM | 3997 1363 | View on Bluesky | view

Profile picture Mark Copelovitch (@mcopelov.bsky.social) reposted

I gave a campus talk last night on Trump's first 100 days for the WUD Society & Politics group. A student asked me if I thought that, at some point, we might start to describe the US as a competitive authoritarian regime. I said that we were already there, it's just that most folks haven't noticed:

image image image image
26/2/2025, 3:26:35 AM | 5038 1502 | View on Bluesky | view

Profile picture Eric Budd (@ericmbudd.com) reposted

not only is our society physically segregated, and our political moment reenforced by an urban / rural divide. social media platforms have created a truth segregation where these kind lies can flourish in algorithmic walled gardens it's truly a dangerous dynamic

31/8/2025, 4:34:51 PM | 63 10 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Yes www.nytimes.com/2025/08/25/c...

31/8/2025, 4:04:42 PM | 16 3 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Lower East Side?! :)

31/8/2025, 2:00:40 PM | 2 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

That shot was from the East River track, which is about to be closed through next year, part of the $1+ billion makeover to climate-proof the lower East Side. 💪

31/8/2025, 1:57:36 PM | 9 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Good morning from the Democrat-controlled, crime-ridden, anti-family HELLHOLE that is lower Manhattan. (Not shown: the family dog, hiding in shame.)

Morning run at East River Park track
31/8/2025, 1:55:43 PM | 44 2 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Combating obesity by buying bigger pants, fails every time.

31/8/2025, 11:51:55 AM | 77 10 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Mea culpa, climate nerds! Meanwhile, "Gulf Stream ⊂ AMOC" ⊻ "AMOC ⊂ Gulf Stream"?

climate nerds disagreeing
31/8/2025, 10:39:09 AM | 5 0 | View on Bluesky | view

Profile picture Cristi Proistosescu (@cristiproist.bsky.social) reposted reply parent

Oh Gernot, you have way too many climate scientists following you to say that AMOC = Gulf Stream for climate nerds. I pity your notifications, but i want you to know that you deserve it .

31/8/2025, 2:10:35 AM | 13 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Sigh

30/8/2025, 10:43:19 PM | 2 0 | View on Bluesky | view

Profile picture Republicans Against Trumpism (@rpsagainsttrump.bsky.social) reposted

RFK Jr: We need to stop trusting the experts... Trusting the experts is not a feature of science or democracy, it's a feature of religion and totalitarianism.

29/8/2025, 7:57:28 PM | 1912 543 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Thanks for the explainer! I do rather like this Carl Wunsch title: "Gulf Stream safe if wind blows and Earth turns" www.nature.com/articles/428...

30/8/2025, 9:23:26 PM | 3 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

;) I'm with Carl Wunsch on this one.

30/8/2025, 7:13:37 PM | 1 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

For a second I thought the @financialtimes.com was starting its 2028 U.S. presidential election coverage particularly early this time around.

Americas society World’s newest petrostate heads for ‘mother of all elections’
30/8/2025, 7:04:17 PM | 16 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

I will never 'simplify' AMOC to read Gulf Stream. I will never 'simplify' AMOC to read Gulf Stream. I will never 'simplify' AMOC to read Gulf Stream. bsky.app/profile/sara...

30/8/2025, 6:59:08 PM | 14 3 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Perfect title. Up there with "Why do Bedouins wear black robes in hot deserts?"

30/8/2025, 6:58:21 PM | 1 0 | View on Bluesky | view

Profile picture Don Moynihan (@donmoyn.bsky.social) reposted

At some point in the not too distant future the conventional wisdom will be that this was a period where the US focused on dumb shit while China took the lead in multiple domains

30/8/2025, 2:59:27 AM | 4328 977 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

You know how the Gulf Stream (AMOC, for the climate nerd set) keeps Europe habitable? The latest tipping points paper is making the rounds for good reason. AMOC collapses past 2100 in *all* projections iopscience.iop.org/article/10.1... Good @economist.com take www.economist.com/leaders/2025...

AMOC collapse in all CMIP6 models Figure 1. (upper) Ensemble means of the AMOC strength and (below) total ocean heat transport at 26°N in the model simulations in which the northern AMOC shuts down. The letters are ordered from top to bottom to correspond to lines with decreasing values in year 2300/2500. The short cyan line shows the observed (yet insignificant) trend of the RAPID observations [21, 22] for 2005–2023 (upper) and 2005–2020 [23] (below).
30/8/2025, 4:44:14 PM | 143 67 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Meanwhile, the @nytimes.com's feel good design issue features a gas stove prominently in the "wellness" kitchen. Sigh.

NYT Design issue cover Gas stove in
30/8/2025, 4:16:49 PM | 4 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Superior tech, that's for sure.

30/8/2025, 2:58:02 PM | 2 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Less asthma, better food. There really is no excuse. And yeah, induction comes at any price point. The cheapest option used to be the contractor-grade gas stove for $300, now it's the $60 IKEA induction plate. #ClimateTech FTW www.bloomberg.com/news/feature... [gift link]

With induction stoves, chefs discover a foolproof path to perfection From Michelin kitchens to home wok burners, induction delivers consistency that gas can't match
30/8/2025, 10:16:00 AM | 56 15 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Wäre höchst an der Zeit, ja gwagner.com/austrian-rail-lines

29/8/2025, 7:42:41 PM | 7 1 | View on Bluesky | view

Profile picture Andrew Dessler (@andrewdessler.com) reposted

Our comment on the DOE CWG report is done. It tips the scales at 439 pages, approx. 3x longer than the DOE report. This is related to Brandolini's law: The amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it. Example: refuting one sentence.

DOE CWG STATEMENT (second paragraph of section 2.1.1, page 3): “Piao et al. (2020) noted that greening was even observable in the Arctic.” COMMENT: This statement implies that the Arctic greening signal was caused by elevated CO2 , however that is not the scientific consensus. Piao et al. (2020) attribute the greening trend in the Arctic predominantly to growing season length driven by warmer temperatures (see also Y. Zhang et al., 2022). Piao et al. (2020) also note that this positive impact of increasing temperatures appears to have weakened over the past four decades, “suggesting a possible saturation of future greening in response to warmer temperature” (see also comment on greenness trends related to Section 2.1.1, first sentence of Page 4). It is also important to put Arctic greening more broadly into the context of the carbon cycle and other impacts. While above-ground plants may have displayed more leaf area over the past decades, rising temperatures also thaw permafrost and drive accelerated decomposition in highly carbon rich soils (Turetsky et al., 2020), a process which is expected to accelerate as climate continues to warm (Miner et al., 2022). Thus even with Arctic greening, high latitude terrestrial systems may become net carbon sources to the atmosphere, causing an amplifying feedback (Braghiere et al., 2023). Other risks to the Arctic linked to higher CO2 levels and rising temperatures are not mentioned in this report (Virkkala et al., 2025). The Arctic is warming at a rate of 2 to 3 times the global average, leading to thawing of permanently frozen soils (permafrost), with downstream impacts including loss of structural support for buildings and subsidence, threatening communities, roads, runways, and other assets across Alaska (Manos et al., 2025; University of Alaska Fairbanks Institute of Northern Engineering US Army Corps of Engineers Alaska District & Laboratory, 2019).
28/8/2025, 1:13:07 AM | 362 140 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

This is how you write a headline. It definitely isn't how you run the EPA. www.nytimes.com/2025/08/28/c...

FOREVER CHEMICALS An industry insider’s changes at the E.P.A. could cost taxpayers billions
29/8/2025, 10:51:17 AM | 14 1 | View on Bluesky | view

Profile picture Justin Wolfers (@justinwolfers.bsky.social) reposted

A “tariff rebate check” is like setting your kitchen on fire and then mailing yourself a bucket of water. There's an easier way to avoid the burn.

27/8/2025, 12:51:55 PM | 3113 947 | View on Bluesky | view

Profile picture Michael Clemens (@mclem.org) reposted

This is a real photograph of Washington, DC this week, where the United States president has ordered military occupation in peacetime, and ordered the display of colossal portraits of himself. www.wsj.com/politics/pol...

Washington, DC under military occupation in last August 2025, with banners proclaiming the absolute power of the primus inter pares
28/8/2025, 10:24:15 AM | 10190 4408 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

The bottom one-tenth now losing $1,200 make barely more a year than the $13,600 gained by the top decile. Obscene.

29/8/2025, 3:35:04 AM | 40 10 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Excellent climate tech primer

27/8/2025, 10:17:55 PM | 8 4 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Upshot: EVs pay for themselves even without subsidies. The one that doesn't? The overpriced Tesla www.nytimes.com/interactive/...

EVs EV cheaper than gas Compact SUV EV cheaper than gas
27/8/2025, 7:23:03 PM | 22 9 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Indeed 😊 gwagner.com/SLK

27/8/2025, 6:54:17 PM | 0 0 | View on Bluesky | view

Profile picture Erik Hoffner (@erikhoffner.bsky.social) reposted

Notoriously-not-green operator of New England’s electric grid warns that the trumps move to halt an (already 80% completed) offshore #renewable #wind farm *will reduce reliability of the grid* 🤔 “Delaying the project will increase risks” it said: thehill.com/policy/energ...

image
27/8/2025, 4:04:32 PM | 41 19 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Hah, happy to serve with all the most cryptic climate takes.

27/8/2025, 5:37:03 PM | 2 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

*soldiers, sheesh. Then again, whoever ordered this can't spell either.

27/8/2025, 5:36:24 PM | 3 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

So so many factors that have contributed to this mistaken perception. And yeah, it's a major problem for climate, too: efficient, well-run, dense, walkable, transit-oriented cities make real nature possible.

27/8/2025, 2:40:39 PM | 11 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

90%(!) cuts at the National Park Service to maintain DC parks. Now it's National Guard solides doing the work, who aren't exactly cheaper. Another DOGE "cut" that is anything but

27/8/2025, 12:15:17 PM | 449 132 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Nice. That puts you quite close to Glacier 3000? bsky.app/profile/tori...

27/8/2025, 11:32:17 AM | 0 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Trump's 50% tariffs on India take effect today. We'll all be poorer for it. Me earlier this month in the Times of India gwagner.com/toi-trump-tariffs

Times of India
27/8/2025, 10:52:13 AM | 12 3 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Deal, though we would need to do quite a bit of field experiments to check enforcement of local ordinances.

26/8/2025, 5:57:47 PM | 8 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

I could get used to this kind of office view. 😍

Working on top of the Wiedersbergerhorn
26/8/2025, 5:37:28 PM | 24 0 | View on Bluesky | view

Profile picture David Ho (@davidho.bsky.social) reposted

Do you ever think about how the fine for peeing in public is substantially more than the fine for dumping tonnes of CO₂ in public?

26/8/2025, 8:09:42 AM | 704 129 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Expropriate a private company, drive up electricity prices for everyone, and all because you'd also like to screw over women

The intrigue: ClearView Energy Partners, in a note, muses on what might have motivated the decision beyond Trump 2.0's disdain for wind. Ideas include the two states' joining litigation against GOP policies on Planned Parenthood; conditions imposed on grants for crime victims; and a
26/8/2025, 1:02:33 PM | 5 0 | View on Bluesky | view

Profile picture Acyn (@acyn.bsky.social) reposted

Pritzker: To the members of the press who are assembled here today and listening across the country, I am asking for your courage to tell it like it is. This is not a time to pretend here that there are two sides to this story.

25/8/2025, 8:55:07 PM | 56283 17781 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

This, too, is #climatetech: USB chargers on a local public bus. WiFi, too, of course.

USB A & C chargers on public bus Kids riding bus WiFi on public bus
26/8/2025, 10:19:01 AM | 8 1 | View on Bluesky | view

Profile picture Justin Wolfers (@justinwolfers.bsky.social) reposted

Yes, the stakes here are large. Very large.

26/8/2025, 12:29:23 AM | 2762 1223 | View on Bluesky | view

Profile picture Tamer Institute for Social Enterprise and Climate Change (@columbiatamer.bsky.social) reposted

The cement industry emits eight percent of global CO2 — and #startups like Brimstone and Sublime aim to change that with cleaner tech. Professor @gwagner.com writes that high costs and slow adoption remain big hurdles. www.ft.com/content/6aa5...

25/8/2025, 4:24:15 PM | 1 3 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

At this point this is no longer just about wind or renewables, this is about basic investment certainty. Lack thereof is why investors demand 20+% return for the same investment in Egypt that gets 6% return in Germany (and yes the US is already at 7 or 8% in this calc) www.axios.com/2025/08/25/t...

25/8/2025, 1:30:26 PM | 14 6 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

On the plus side: the century-old train from Zugspitze to Garmisch is spectacular, Garmisch has >hourly direct connections to Munich, and the flow of humanity emerging from each train is beautiful 😍

Train from Zugspitze Eibsee to Garmisch Train from Munich arriving at Garmisch
25/8/2025, 10:07:58 AM | 6 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Most fun/sad part: the German kid pleading with the parents to stay on in the train past Eibsee. "No, we have to get out. Our car is here." More pleading. "You'll have your iPad!" 😿

24/8/2025, 4:57:26 PM | 6 0 | View on Bluesky | view

Profile picture Kees van der Leun (@sustainable2050.bsky.social) reposted reply parent

Same glacier less than 100 years ago. www.bayerische-gletscher.de/nsf/nsf_bild...

image
24/8/2025, 2:59:24 PM | 7 2 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

This train from the top of the mountain goes past the massive parking lot at the Eibsee all the way to Garmisch, with easy connection onward to Munich and elsewhere. There's zero excuse for a 500-car lot at the Eibsee.

Train from Gletscherbahnhof Zugspitzplatz to Garmisch Parkplatz Eibsee Google Maps Parkplatz Eibsee
24/8/2025, 2:35:02 PM | 9 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Sigh 😞

24/8/2025, 2:26:26 PM | 0 0 | View on Bluesky | view

Profile picture Stef Schrader (@hoonofthe.day) reposted

Easily the most depressing part of my recent PNW trip was just how much snow and ice were missing from every angle of Mt. Rainier compared to when I used to live there. This sucks. All of this just sucks.

24/8/2025, 2:21:32 PM | 37 6 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

And here it is, the car ad at the Gletscherbahnhof (glacier train station).

Gletscherbahnhof Train station Audi ad
24/8/2025, 2:15:35 PM | 10 2 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Welcome to the saddest remnants of what once was a proud glacier. But, hey, WiFi works, so Yay Modernity!

Schneeferner glacier
24/8/2025, 1:28:39 PM | 60 20 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

A look at what's left of the one remaining glacier on Germany's tallest mountain. This week's Spiegel explains how the glacier is slated to lose its status in the next year or two(!).

Zugspitze glacier Spiegel
24/8/2025, 11:58:37 AM | 29 19 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Gondola up the Zugspitze 🚠

24/8/2025, 10:22:34 AM | 24 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Indeed. It's climate *in*action that breeds political cynicism much like it's governmental inaction on housing, food & fuel prices, or mayors failing to pick up the trash, that breeds cynicism & popular revolts

24/8/2025, 8:56:33 AM | 40 13 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

It's too late for despair.

22/8/2025, 9:59:44 PM | 3 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Only really unclear, if you really, really prefer it to be unclear, I'm afraid.

22/8/2025, 9:11:05 PM | 2 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Sigh 😔

22/8/2025, 8:25:00 PM | 1 0 | View on Bluesky | view

Profile picture Kyle Griffin (@kylegriffin1.bsky.social) reposted

Reuters poll: 57% of Americans fear that American democracy is in danger — including 4 in 10 Republicans.

22/8/2025, 3:55:07 PM | 2254 651 | View on Bluesky | view

Profile picture Oliver Morton, Eater of Sun (@eaterofsun.bsky.social) reposted

I fail to see what is unclear here: www.nytimes.com/live/2025/08...

Screengrab from the article Reads: Unclear motives: Since he returned to office, Mr. Trump and his administration have used a whole-of-government approach to go after his perceived enemies and impediments to his agenda. In doing so, they have signaled the hefty costs that criticism of Mr. Trump could incur, and undercut the principle that law enforcement should keep a substantial distance from politics.
22/8/2025, 6:11:24 PM | 16 3 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Noooo, not the Non-Use Agreement :) bsky.app/profile/gwag...

22/8/2025, 2:32:55 PM | 0 0 | View on Bluesky | view

Profile picture ProPublica (@propublica.org) reposted

On the left: Nate Cavanagh, a 28-year-old DOGE staffer and college dropout. On the right: Mohammad Halimi, a 53-year-old exiled Afghan scholar. This is the story of how DOGE targeted Halimi on social media. Then the Taliban took his family. 🧵

Photo of DOGE staffer Nate Cavanagh, a 28-year-old white man in a blue pullover, carrying a black backpack. Photo of 53-year-old Afghan scholar Mohammad Halimi. He is sitting, wearing white pants and shirt with a brown vest.
22/8/2025, 11:41:15 AM | 5929 3318 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

The topic: geoengineering, in a "debate" with @wolfgangcramer.net Plenty of nuance, of course. Also plenty of agreement. The big difference: I didn't sign the Non-Use Agreement; gwagner.com/GtG instead calls for a deployment moratorium, with an explicit call for research.

Espresse ARTE setup Waning glacier
22/8/2025, 1:03:12 PM | 3 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Today's mission: Schneefernerhaus at the Zugspitze, Germany's tallest mountain, for a taping for an @artefr.bsky.social documentary. The name is sadly apt: "Schnee" (snow) is rather "fern" (far) these days, and the remaining glacier is slated to lose its status in the next couple of years.

Schneefernerhaus ARTE taping at the Schneefernerhaus
22/8/2025, 12:41:52 PM | 17 2 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

Housing policy = climate policy

21/8/2025, 4:28:49 PM | 21 6 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

There really is no excuse not to cut that gas line. Email from ConEd just now: "Get up to $10,000 To Boost Efficiency With Air-Source Heat Pumps" Would have cut our install costs 5 years ago by >30% gwagner.com/curbed-coop

Enjoy Cool Comfort & Even Cooler Savings Say goodbye to your clunky, outdated window AC units or central air system and switch to the most efficient home comfort option—air-source heat pumps. Which Air-Source Heat Pump Is Right for Your Home? 1. Mini Splits: Ideal for homes that don’t have existing ductwork. Can be mounted on the floor, wall, or ceiling. 2. Central Air-Source: Perfect for homes with existing ductwork—won’t take up additional space on your walls. 3. Air-to-Water: Provides heating, cooling, and domestic hot water. Best for homes with existing radiators that can be repurposed. Get up to $10,000 off your installation when you work with a Participating Contractor. Plus, installation is quick—often completed in as little as two days! Get More Information
21/8/2025, 2:45:06 PM | 10 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Getting off before then ;)

21/8/2025, 2:40:49 PM | 1 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

One kid jumps up from his book, phone in hand: "Look at that castle. Peak European!" Other kid: "Nah, mid! That's not even Austria yet." 😎

Kid taking picture of castle Kid laughing, eating Linzer cake
21/8/2025, 2:04:17 PM | 8 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

I realize I'm a year late here, but these new ÖBB Railjets are something else. Best train out there, made even better. If you told an American Amtrak rider that you could transverse the Alps in a perfectly designed, quiet workspace with stable WiFi & espresso delivered to your seat, 🤯

Venezia Santa Lucia - München Hbf Kids reading Business cabin
21/8/2025, 1:45:32 PM | 32 2 | View on Bluesky | view

Profile picture Michelle Wu 吳弭 (@wutrain.bsky.social) reposted

Actually I swore an oath to uphold the Constitution of the United States with my hand on @bpl.boston.gov’s 1782 edition Aitken Bible—also known as the Bible of the Revolution.

21/8/2025, 11:14:11 AM | 12228 2550 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

You know how Trump promised to cut electricity bills by 50%? Anyone surprised things are going the other way? heatmap.news/energy/why-i...

How Electricity Got So Expensive You’ve probably noticed — even Trump has noticed — but the reason why is as complicated as the grid itself. ROBINSON MEYER • AUGUST 20, 2025
21/8/2025, 11:50:34 AM | 29 12 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com)

The green transition will not be stopped by Trump or anyone else. Just look to Ethiopia, and Morocco, and Nepal, and Pakistan, and Turkey www.economist.com/finance-and-...

21/8/2025, 10:29:19 AM | 45 13 | View on Bluesky | view

Profile picture Alan Beattie (@alanbeattie.bsky.social) reposted

My Trade Secrets today. Everyone says Donald Trump conducts trade and tax policy like a mafia boss. But dealing with him often means not just an offer you can’t refuse but an offer you can’t rely on — sometimes an offer you can’t understand. on.ft.com/45KbJcQ

21/8/2025, 8:36:32 AM | 145 52 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Just Arsenale, I'm afraid. Too much rain for Giardini. Quote hotel concierge: "That much rain is new. Climate change."

Rainy walk through Venice
21/8/2025, 8:22:46 AM | 0 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

And it wasn't even staged. Just him processing.

21/8/2025, 8:18:06 AM | 0 0 | View on Bluesky | view

Profile picture Carl T. Bergstrom (@carlbergstrom.com) reposted

I am a former congressional lightweight who doesn’t understand the first thing about soft power. By Mike Gallagher

OPINION COMMENTARY | Follow Send Harvard's Chinese Students Home It makes no sense for the U.S. to be educating the scientific and leadership class of a future adversary. By Mike Gallagher Aug. 19, 2025 at 4:28 pm ET
21/8/2025, 6:37:20 AM | 399 47 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Yup. Taste test: delicious.

21/8/2025, 6:43:29 AM | 1 0 | View on Bluesky | view

Profile picture The Economist (@economist.com) reposted

While it may seem like a dark time for climate tech, there are good reasons to believe that the next few years will see the emergence of new forms of clean energy. We explain why econ.st/4oI7FCu Photo: Prologis

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20/8/2025, 8:00:13 PM | 32 13 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Everyone's walking that one path between St. Mark's and Rialto Bridge bsky.app/profile/gwag...

20/8/2025, 8:00:14 PM | 4 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Truly.

20/8/2025, 7:43:10 PM | 1 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Walking home through Venice

Walking back through Venice Venetian life
20/8/2025, 7:41:36 PM | 4 0 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Canal Water Espresso €1.20

Canal Water Espresso €1.20
20/8/2025, 7:40:11 PM | 7 1 | View on Bluesky | view

Profile picture Gernot Wagner (@gwagner.com) reply parent

Exhausted Biennale visitors

Self portrait at Biennale
20/8/2025, 7:39:18 PM | 1 0 | View on Bluesky | view