Karl Mathiesen

While 18 million barrels of oil per day are not coming through the Persian Gulf, the British government doubles down on going “further and faster in our drive for clean power” without a mention of a strategy for replacing some oil consumption with electrification. 1/2

New from me: I got a heat pump. It really didn't need to be this hard. politico.eu/article/new-he…

NEW: Europe's rightwing populists risk being only the “beneficiaries of other movements’ weaknesses” rather than serious parties of government, warns one of their intellectual champions Frank Furedi in an interview with me. politico.eu/article/the-po…

This is not true, I am told from well placed military sources. No US military assets have escorted any oil tankers through the Strait of Hormuz as of yet, despite Energy Secretary Chris Wright’s claim to the contrary.

NEW COLUMN: One way to consider what Trump is doing in Iran, as well as Venezuela and Cuba, is to go beyond the binary of "regime change" and "keeping a regime." What Trump appears more interested in is changing a regime's *behavior*. And it sometimes works: politico.com/news/magazine/…

Truer than intended...

France abandons plan to demand @FranceskAlbs resign at UN meeting 👀 The rapporteur on the occupied Palestinian territories has been under fire over alleged antisemitism, which she denies 🇫🇷 says position on substance unchanged.. w/ @KarlMathiesen politico.eu/article/un-fra…

@RichardGrenell I'm a Politico reporter — pls follow for DM?

Why does this moment feel unmoored from the past? The new energy disorder. politico.com/newsletters/fo…

One of the most interesting, wild stories I've read in awhile, in @POLITICOMag by @KarlMathiesen and @CorbinHiar politico.com/news/magazine/…

A 25-person startup is developing technology to block the sun and turn down the planet’s thermostat. The stakes are huge — and the company and its critics say regulations need to catch up. Read more: politi.co/4iaojIc

"A key threshold had already been crossed. Humanity had gained the power to turn down the sun, and barely anyone on the planet even knew. What’s more, that untested power was now effectively for sale." politico.com/news/magazine/… Incredible story by @KarlMathiesen & @CorbinHiar

"Just before the visit ... a document was sent to POLITICO. If any doubts remained about how seriously Stardust should be taken, the document, reported here for the first time, dispelled them." politico.com/news/magazine/…

It was a huge and rewarding undertaking alongside @CorbinHiar and our editor @KatelynFossett

Stardust. The Israeli-U.S. company with a strange and totally real plan to block out the sun and reverse global warming. Reporting this story involved a complete relearning of what I thought I knew about how the climate future will play out. politico.com/news/magazine/…

"Back in the showroom, they were playing Frank Sinatra’s New York, New York — one of Trump’s favorite songs. There was little else that would have pleased the president’s ear." Dispatch from the EV boom in Brazil, from @KarlMathiesen politico.com/news/magazine/…

NEW: Climate summit proposal dodges call to accelerate move from fossil fuels politico.com/news/2025/11/2…

NEW: The sad, sorry state of COP politico.com/newsletters/po…

It's here! One of the coolest, and certainly the most globe-spanning, stories I've ever worked on, about a company that might just be on its way to blotting out the sun. By two of the very best, @KarlMathiesen and @CorbinHiar politico.com/news/magazine/…

🚨'The worst environmental setback in Brazil's history.' Just a week after COP30 ends, it looks almost certain that Brazil's agribusiness dominated Congress will strip almost all oversight of damaging projects. politico.eu/article/brazil…