Guillaume Frasca

@gfrasca.bsky.social

Management de la recherche - ex Fondation ARC et France Alzheimer - aujourd'hui à l'Institut Pasteur @pasteur.fr

"2010 est la dernière année où nous pouvons affirmer que ce fossé n'existait pas. En 2020, nous avions des preuves assez claires : les conservateurs étaient en moins bonne santé que les progressistes." L'étude (avec ses limites) : www.nature.com/artic... 2/2

The political polarization of health outcomes in the USA

Nature Human Behaviour - Using individual-level medical data and death records, this study finds that conservatives in the USA experienced worse health and higher mortality than liberals during the...

nature.com

Au cours de l’épisode caniculaire, de très nombreuses températures inédites ont concerné le pays. Jusqu’à 72 départements ont été placés simultanément en Vigilance rouge canicule : c’est inédit. Le seuil des 40 °C a été atteint ou dépassé au moins une fois sur plus de 40% du territoire.

Infographie montrant la proportion du territoire ayant connu des températures supérieures à 40 degrés en août 2003 et en juin 2026.

Researchers have identified superparamagnetic macrophages in the livers of rock pigeons to be crucial for magnetic sensing. The finding uncovers an unexpected role for immune cells in sensory perception and may fundamentally change our understanding of animal navigation. https://scim.ag/4nTQ3nq

How animals sense Earth’s magnetic field is one of biology’s enduring mysteries. Researchers have now identified superparamagnetic macrophages in the livers of rock pigeons (Columba livia) to be crucial for magnetic sensing. The finding uncovers an unexpected role for immune cells in sensory perception and may fundamentally change our understanding of animal navigation.

Photo: Andreas Teichmann/laif/Redux

La montée en puissance de l'anti-science aux USA sous la présidence de Trump n’est pas un phénomène spontané lié à une accumulation d’erreurs individuelles ou des croyances irrationnelles mais un système structuré, organisé et alimenté par des intérêts politiques, économiques et médiatiques. 1/10

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😍 #womeninSTEM #womeninscience Thank you to everyone, as well as to the many initiatives, that have helped write Wikipedia biographies of women in science to reverse the trend of women’s underrepresentation 👏👏👏 www.science.org/content/arti...

Wikipedia’s gender gap has flipped for one group of scientists

A new study finds women biology faculty are now more likely than men to have a biography on the popular website

science.org

Scientific literature depends on the integrity of its references. In a new research letter, authors present the findings of a reference-integrity audit of 2.5 million biomedical papers. Read this & more in our latest issue: spkl.io/63325A7eXP

Cover of The Lancet's May 9, 2026 issue. Quote on cover reads: "[An]...audit of 2.5 million biomedical papers spanning 3 years, show[ed] that fabricated references are embedded in the peer-reviewed literature at scale, and that the rate of fabrication is accelerating."

Big change! More US Americans now move to Europe than Europeans to the US. Only 20 years ago the ratio was 4:1. We can make educated guesses regarding the political leaning of the voters leaving the US. This chart might be embarrassing for MAGA but it works in their favour. HT @benbawan

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Aux USA, les Instituts Nationaux de la Santé (NIH) n'attribueront quasiment plus de subventions en demandant, comme ils le faisaient jusqu'à maintenant, aux chercheurs de soumettre des propositions portant sur des problèmes scientifiques spécifiques. Au lieu de ça, (...) 1/3

Meet Molly Ingersoll, microbiologist & immunologist. Her work shows how women and men can respond very differently to infections, and why sex-specific treatments are urgently needed. She also speaks up about the invisible hurdles women face in science. Follow her here @immunobladder.bsky.social

Molly Ingersoll: advocating for women's health and women's rights

Molly Ingersoll has been head of a research team at the Institut Pasteur in Paris since 2012. This unfailingly optimistic microbiologist and immunologist is committed to revolutionizing our approach t...

pasteur.fr