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François Marechal

@francoismarechal.bsky.social

Professor in Ecole Polytechnique fédérale de Lausanne (EPFL), industrial process and energy systems engineering. Think systems ! Posts are my opinion My research group : http://ipese.epfl.ch

335 Followers  |  1,223 Following  |  633 Posts  |  Joined: 19.12.2023  |  2.387

Latest posts by francoismarechal.bsky.social on Bluesky

On NPR on Friday, there was a story of a 4-year-old--an American citizen--who hasn't left her house since early December, not even to play in the yard. And her 8-year-old brother recently stopped going to school, too. Their father is undocumented, and the family doesn't want to risk him being taken.

26.01.2026 03:47 — 👍 5713    🔁 1789    💬 51    📌 32

Reaching net zero means be independent of fossilized civilisation

26.01.2026 07:11 — 👍 0    🔁 0    💬 0    📌 0
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In 2000 95% of Poland's electricity was from coal. Today it is 51%. Total coal generation in TWh dropped by 36%.

Source is new @ember-energy.org European Electricity Review.

25.01.2026 11:19 — 👍 4196    🔁 647    💬 85    📌 32

With a lower energy bill and a lower dependence on other friendly nations … I.e. Russia, USA, …

The sun shines for free everywhere, just be smart, use it, It’s an engineering problem.

25.01.2026 23:10 — 👍 0    🔁 0    💬 0    📌 0

This is now a no-brainer.

25.01.2026 21:58 — 👍 7    🔁 2    💬 0    📌 0

"We must always take sides. Neutrality helps the oppressor, never the victim. Silence encourages the tormentor, never the tormented."-Elie Wiesel

25.01.2026 19:47 — 👍 1680    🔁 424    💬 22    📌 8
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AOC: "An ICE officer had violently pushed a woman to the ground and he had come over to help get her up and that is what precipitated this incident that very quickly led to an execution in the streets. What we are seeing here is a momentous pivotal moment for the United States."

24.01.2026 22:25 — 👍 29483    🔁 10559    💬 932    📌 466
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The killing of Alex Pretti is a heartbreaking tragedy. It should also be a wake-up call to every American, regardless of party, that many of our core values as a nation are increasingly under assault.

25.01.2026 17:39 — 👍 58566    🔁 19113    💬 3115    📌 1521
Statement from Michael and Susan Pretti.

Statement from Michael and Susan Pretti.

“Please get the truth out about our son.”

Alex Pretti, a VA ICU nurse, was killed by ICE while trying to protect a woman being assaulted.

Trump calls him a “monster” and “domestic terrorist.”

Trust your own eyes. Unlike Trump, the video doesn’t lie.

25.01.2026 17:01 — 👍 497    🔁 169    💬 26    📌 8
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When two years of academic work vanished with a single click Nature - After turning off ChatGPT’s ‘data consent’ option, Marcel Bucher lost the work behind grant applications, teaching materials and publication drafts. Here’s what happened next.

After turning off ChatGPT’s ‘data consent’ option, Marcel Bucher lost the work behind grant applications, teaching materials and publication drafts

go.nature.com/4r2atei

25.01.2026 15:23 — 👍 29    🔁 11    💬 3    📌 5

We will see countries for which the democracy is more important then football competition. Perhaps the easiest would be to find 11 alternative stadiums around the world.

25.01.2026 14:55 — 👍 0    🔁 0    💬 0    📌 0

I will not travel to the US of course

24.01.2026 22:05 — 👍 0    🔁 0    💬 0    📌 0
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Incredible

24.01.2026 17:07 — 👍 551    🔁 213    💬 42    📌 47

Same method than by Iranian police, « people keep protesting » said the big beautiful president ?

24.01.2026 18:02 — 👍 0    🔁 0    💬 0    📌 0

ICE has been trained by Iran police!

24.01.2026 17:58 — 👍 0    🔁 0    💬 0    📌 0

I thought a peace board was in charge. With the one billion entrance bill and a big beautiful board president and his son in law, the problem should have been solved in 2 min, no ?

24.01.2026 17:53 — 👍 0    🔁 0    💬 0    📌 0
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German soccer federation official wants World Cup boycott considered because of Trump A German soccer federation executive committee member says it’s time to consider a World Cup boycott because of the actions of U.S. President Donald Trump.

A German soccer federation executive committee member says it's time to consider a World Cup boycott because of the actions of U.S. President Donald Trump.

23.01.2026 22:00 — 👍 18713    🔁 4890    💬 1159    📌 1536
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Broken Chart: discover 9 visualization alternatives Researcher in climate science at MBG-CSIC

@drxeo.eu reminds us that chart choice should always be guided by the data type, the message, and the audience.

dominicroye.github.io/blog/broken-...

21.01.2026 22:46 — 👍 8    🔁 2    💬 0    📌 0

Let’s see how the democracy will manage the autocracy… is JD a real alternative?

20.01.2026 07:19 — 👍 0    🔁 0    💬 1    📌 0
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‘Weaponizing’ $10 Trillion of US Assets Is Tough Ask for Europe As Europe considers how best to respond to US President Donald Trump’s latest threats over Greenland’s sovereignty, there’s one extreme potential counter measure that’s fueling debate among investors.

As Europe considers how best to respond to US President Donald Trump’s latest threats over Greenland’s sovereignty, there’s one extreme potential counter measure that’s fueling debate among investors.

19.01.2026 22:00 — 👍 34    🔁 13    💬 6    📌 2
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Top Catholic cardinals say U.S. foreign policy raises moral questions Three senior archbishops said recent events raise “basic questions about the use of military force” and have put America’s moral role “under examination.”

Echoing concerns of Pope Leo XIV over a new era of unilateralism and warfare, three highest-ranking archbishops said “the moral foundation for America’s actions in the world” has been thrown into question by a resurgence in the use of military force.

19.01.2026 23:00 — 👍 191    🔁 53    💬 15    📌 2

The big problem is that
Putin : « Ukraine invasion is a question national security »
#ubu (Trump): «  we need to invade Greenland, it is a question of national security »

19.01.2026 23:23 — 👍 0    🔁 0    💬 0    📌 0

Meanwhile

19.01.2026 23:04 — 👍 466    🔁 103    💬 2    📌 4

One misconception that needs to end is that we can't be living under fascism because we aren't at the end point of the Nazi regime. But everything has a start. This is an important thread. Please read.

19.01.2026 23:05 — 👍 106    🔁 33    💬 0    📌 1

What is #ubu doing, thread of tariffs are not working …

19.01.2026 07:33 — 👍 0    🔁 0    💬 0    📌 0
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Oxfam dénonce les ultrariches qui « sapent la liberté politique » (et pointe particulièrement Trump)

Oxfam dénonce les ultrariches qui « sapent la liberté politique » (et pointe particulièrement Trump)

19.01.2026 07:10 — 👍 10    🔁 6    💬 0    📌 0
NEW: @potus letter to @jonasgahrstore links @NobelPrize to Greenland, reiterates threats, and is forwarded by the NSC staff to multiple European ambassadors in Washington. I obtained the text from multiple officials:

Dear Ambassador:
 
President Trump has asked that the following message, shared with Prime Minister Jonas Gahr Støre, be forwarded to your [named head of government/state]

“Dear Jonas: Considering your Country decided not to give me the Nobel Peace Prize for having stopped 8 Wars PLUS, I no longer feel an obligation to think purely of Peace, although it will always be predominant, but can now think about what is good and proper for the United States of America. Denmark cannot protect that land from Russia or China, and why do they have a “right of ownership” anyway? There are no written documents, it’s only that a boat landed there hundreds of years ago, but we had boats landing there, also. I have done more for NATO than any other person since its founding, and now, NATO should do something for the United States. The World is not secure unless we have Complete and Total Control of Greenland. Thank you! President DJT”

NEW: @potus letter to @jonasgahrstore links @NobelPrize to Greenland, reiterates threats, and is forwarded by the NSC staff to multiple European ambassadors in Washington. I obtained the text from multiple officials: Dear Ambassador: President Trump has asked that the following message, shared with Prime Minister Jonas Gahr Støre, be forwarded to your [named head of government/state] “Dear Jonas: Considering your Country decided not to give me the Nobel Peace Prize for having stopped 8 Wars PLUS, I no longer feel an obligation to think purely of Peace, although it will always be predominant, but can now think about what is good and proper for the United States of America. Denmark cannot protect that land from Russia or China, and why do they have a “right of ownership” anyway? There are no written documents, it’s only that a boat landed there hundreds of years ago, but we had boats landing there, also. I have done more for NATO than any other person since its founding, and now, NATO should do something for the United States. The World is not secure unless we have Complete and Total Control of Greenland. Thank you! President DJT”

mad king moment

from the PBS Newshour correspondent

19.01.2026 05:09 — 👍 8869    🔁 2679    💬 134    📌 1818

When knowledge and understanding are not provided freely and universally but are restricted behind barriers, they become weapons that predators use to abuse people. The institutions are complicit in this.

18.01.2026 16:40 — 👍 35    🔁 9    💬 0    📌 0

You are right , « equivalent to a subsidy »that we receive from the future generations.

18.01.2026 16:53 — 👍 1    🔁 0    💬 1    📌 0

The poluters pay dispense to the oil and gas industry is a subsidy as the social cost for repair will be paid and we did not ask the poluters to be ready to repair.

18.01.2026 11:53 — 👍 1    🔁 0    💬 1    📌 0

@francoismarechal is following 20 prominent accounts