www.pv-magazine.com/2025/10/21/m... This looks really cool, but I wonder what this mysterious silicon-free solar paint is. Perovskite? It's weird that they don't say which technology they're using.

Primary energy coefficients used in building regulations are highly political and dependent on your goals, and pretending they're just a result of physics is totally dishonest.

1. Biking infrastructure 2. How cars destroyed cities 3. Why solar is going to win

Bonjour @fub-fr.bsky.social, le baromètre vélo c'est super, mais est-ce que vous pourriez faire votre carte avec une échelle lisible par les daltoniens (qui représentent pas loin de 10% de la population)? Rouge-bleu ce serait parfait. Le rouge-orange-jaune-vert c'est vraiment le pire

my takeaway from climate week nyc is that "climate storytelling" is a little too much "we must reimagine our deepest souls in relationship to mother nature and the moral abyss of the polycrisis into which we must now stare" and not enough "ok but get a heat pump"

Je cherchais des chiffres sur les évolutions récentes du périph, je tombe sur cet article catastrophique: liguedesconducteurs.org/vitesse-info... "La plus forte chute d’intensité sonore intervient la nuit avec -2,3 décibels, ce qui constitue « 3 % de baisse » " *cries in logarithmic scale*

Cars 1.35 million!

Solar and wind deliver

Proposition pour améliorer la gare routière de Bercy: decider.paris.fr/decider/jsp/...

Proposition pour améliorer le tunnel des Tuileries decider.paris.fr/decider/jsp/...

L'ADEME dévoile aujourd'hui une grande étude sur la mobilité des enfants. On constate malheureusement un recule de l'autonomie : "L’étude révèle un recul de l’âge du 1er déplacement autonome : 11,6 ans pour les enfants contre 10,6 ans pour leurs parents au même âge" infos.ademe.fr/mobilite-tra...

For a long time renewable energy uptake in Africa was lacklustre at best. But that is changing: Solar panel imports to Africa have surged over the past year—a shift poised to touch nearly every country on the continent as new Ember analysis shows.

Paris now has 300+ school streets. How many does your city have? Not to be depressing, but....at least we can make them happen. Here is a tool to use. youtu.be/ezPzocuqKPc?...

Great episode, instructive as a European too! This question has been debated a lot in France among transit advocates.

The USA government could invest in a bike lane network, allowing millions of americans to get some exercise while saving money (because bikes are so much cheaper than cars) but no, they choose car dependency and tell you to pay for a gym you can't afford.

De la part d'un ancien ambassadeur d’Israël en France

How big is the slow down in US clean energy manufacturing investments? We are tracking 34 projects, $31.3B in investment and 27,949 jobs that have slowed since Trump took office. Key points from our 6-month report below highlight some surprising trends in what is advancing v slowing. 🧪🔌💡☀️💨🔋

Hi, I'm an engineer in a movie. After weeks of working on a difficult problem (sometimes removing my glasses to rub my eyes), I will come up with a genius yet extremely simple solution, such as "just turn the motor upside down", getting inspiration from an everyday event, like someone spilling food.

Photovoltaics. Sodium ion batteries.

Excellent and important journalistic work here: projects.propublica.org/venezuelan-i...

ALERTE GENERALE ! Une pétition a été lancée sur le site de l'Assemblée nationale demandant que le gouvernement arrête d'utiliser X pour ses communications officielles. On signe toutes et tous pour lui donner le maximum de visibilité. C'est ici : petitions.assemblee-nationale.fr/initiatives/...

@paris.fr la baignade dans la Seine ouvre dans deux jours, quand est-ce que vous allez publier les mesures de qualité de l'eau?

Its rather delicious that this compelling take down of William Nordhaus by @profstevekeen.bsky.social was delivered at Yale University. No punches pulled. youtu.be/QGfaqALkc40

Cool thread about how we can switch from physical inertia to digital inertia. Probably the best long term solution to the blackouts like the one we've seen in Spain.

@cbrossel.bsky.social vous êtes ma représentante au Sénat, allez vous voter pour la loi instaurant la taxe Zucman? Pouvez-vous communiquer à ce sujet sur votre compte?

We're approaching the 30% module efficiency landmark! And more importantly, GCL claims to have similar degradation rates as Silicon modules. If confirmed, this could be a game changer. www.pv-magazine.com/2025/06/02/g...

Protected bike lanes have a near-magical ability to produce cyclists. This new study of 28 US cities finds that census block groups w/protected bike lanes expanded bike commuting almost 2x faster than those w/standard bike lanes & >4x faster than those w/o new lanes. www.nature.com/articles/s44...

Cato has published my comprehensive review of the ~240 Venezuelans the US government renditioned 2 months ago to Salvador’s notorious prison. We identified FIFTY who came legally, never violated any immigration law, but are imprisoned at the US government’s request and at US taxpayer expense.

Turns out heavy trucks are finally not that hard to electrify. Next: ships? www.reuters.com/business/ene...

See @nytimes.com ? That's how journalists with a spine cover this kind of subject

Il est quand même possible de pourrir leur questionnaire : fr.research.net/r/ML93XGN 😉

«À vélo tous les jours "Un km à vélo, c’est un euro de coût de santé évité". Le vélo, c’est bon pour la santé, les finances publiques et le climat, confirme cet épidémiologiste et coauteur d’une étude sur le sujet» www.letelegramme.fr/culture-lois...

L'occasion de rappeler que la déforestation induite par l'extraction est bien davantage le fait de l'extraction d'or et de charbons que des métaux pour la transition. Que les discours "anti-mines" se concentrent contre la transition est très étrange. www.energy-transitions.org/publications...

Nature poll of more than 1575 people: 96% think Trump administration will have negative effects on the US. 94% are worried about the future of science in the US. 94% think Trump's science policies will have negative global effects.

@changefrance.bsky.social vous voudriez pas ajouter un bouton "partager sur Bluesky" et "partager sur Mastodon"? Je trouve choquant que votre site propose de partager sur les réseaux des milliardaires complices de Trump mais pas sur des alternatives plus libres.

Allez on partage! J'ai aucun doute que ça finira par arriver un jour, mais le plus tôt sera le mieux

If you care about the climate, you are not alone. In fact, you're the vast majority.

Une étude française montre que un km parcouru à vélo permet une économie d'un euro à la société... Le vélo ne coûte pas. Il rapporte. www.thelancet.com/journals/lan...

One day there will be a Nuremberg trial for these criminals against humanity.

I look at close to 100 stories a week and even more outside of work. I’ve done this ten years. This is among the most horrific things I’ve ever read — testimony from dying children whose access to medicine has been cut off by the Trump administration. www.npr.org/sections/goa...

www.theguardian.com/commentisfre.... Couldn't agree more with this. The conclusion is obvious: let's get out of fossil fuels as fast as possible.

Maybe someone should inform Trump that the word "tariff" comes from Arabic. Could that make him change his racist mind?

Fascism is back

Le RN a piqué 4,1 millions d'euros d'argent public, il ne s'agit pas d'argent magique mais du contribuable. "II y a aussi le confort des dirigeants d’un parti et l’enrichissement d’un parti", ajoute la présidente du tribunal. Le RN va tout faire pour tenter de faire oublier cet aspect aux Français.

Good news: looks like the only rare material still used in solar Cells (Silver) can be replaced too, by cheap and abundant aluminium, while only decreasing efficiency by 0,8 percentage point. www.pv-magazine.com/2025/03/28/t...

Reasons for hope!

“The loss of U.S. support may mean 75 million children do not receive routine vaccinations in the next five years, with more than 1.2 million children dying as a result.” 1.2 million children dying. Abhorrent. Evil. Indefensible.

I helped build a government AI system. DOGE fired me, rolled the AI out to the whole agency, and implied the AI can do my job and the jobs of the others they've fired. It can't. But, what DOGE accidentally revealed about themselves in the process is fascinating. 🧵

This should be the first measure in Europe. It's pragmatic, it's efficient, it's highly consensual among Europeans. Let's do it.

The New York Times is the first to put out comprehensive estimates on the cost of a year without U.S.A.I.D. and they’re higher than I thought: - 1.65 million deaths from AIDS - 500,000 from lack of vaccines - 550,000 from lack of food aid - 290,000 from malaria - 310,000 from TB