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Immunité : pourquoi notre corps tombe malade ?

12 janvier 2026 à 07:00
Chaque jour, notre corps affronte des milliards de microbes sans que nous en ayons conscience. Pourtant, parfois, la maladie s'installe : pourquoi et comment cela arrive-t-il ?Cette semaine dans Futura Santé, on va parler de l'immunité, de son fonctionnement, et des raisons scientifiques pour...

The friendship secret: why socialising could help you live longer

12 janvier 2026 à 06:00

Neuroscientist Ben Rein is on a mission to show that being around others not only feels good, but can even improve recovery from strokes, cancer and heart attacks. So why are so many of us isolated and glued to our phones?

‘I hate it.” I’ve asked the neuroscientist Ben Rein how he feels about the online sea of junk neuroscience we swim in – the “dopamine fasts”, “serotonin boosts” and people “regulating” their “nervous system” – and this is his kneejerk response. He was up early with his newborn daughter at his home in Buffalo, New York, but he’s fresh-faced and full of beans on a video call, swiftly qualifying that heartfelt statement. “Let me clarify my position: I don’t hate it when it’s accurate, but it’s rarely accurate.”

He draws my attention to a reel he saw recently on social media of a man explaining that reframing pain as “neurofeedback, not punishment” activates the anterior cingulate cortex (a part of the brain involved in registering pain). “That’s genuinely never been studied; you are just making this up,” he says. He posted a pithy response on Instagram, pleading with content creators to “leave neuroscience out of it”. “That’s why I think it’s especially important for real scientists to be on the internet,” he says. “We need to show the public what it looks like to speak responsibly and accurately about science.”

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© Photograph: Brandon Watson/The Guardian

© Photograph: Brandon Watson/The Guardian

© Photograph: Brandon Watson/The Guardian

New Children’s Vaccine Schedule May Not Be the Last of RFK Jr.’s Big Changes

11 janvier 2026 à 11:01
Comments by Robert F. Kennedy Jr. and his allies suggest the revised schedule may presage an approach to immunization that prizes individual autonomy and downplays scientific expertise.

© Desiree Rios for The New York Times

A family nurse practitioner in a white coat administers a vaccine to a three-year-old child in Seminole, Texas.

‘Lots of people don’t want to do it’: Paul Nurse on his controversial second term as Royal Society president

11 janvier 2026 à 12:00

The Nobel prize winner discusses claims of a ‘boys’ club’, Elon Musk’s fellowship and rightwing attacks on science

Paul Nurse is a turn up for the books. A Nobel prize-winning geneticist, former director of the Francis Crick Institute and erstwhile head of Rockefeller University in the US, his CV marks him out as one of this generation’s most eminent scientific figures.

But his presidency of the Royal Society, a position he has taken up for a second time, makes him rarer still. No other scientist in centuries has had a second term at the head of the academy.

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© Photograph: Sarah Lee/The Guardian

© Photograph: Sarah Lee/The Guardian

© Photograph: Sarah Lee/The Guardian

Bird Flu Viruses Raise Mounting Concerns Among Scientists

10 janvier 2026 à 19:48
Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the world.

© Tim Gruber for The New York Times

The milking parlor of a Wisconsin dairy farm. The Agriculture Department announced the first detection of bird flu in a herd in the state, the third time the virus had jumped from wildlife into dairy cattle last year.

Trump’s Steep Science Budget Cuts to Be Turned Back by Congress

10 janvier 2026 à 11:02
After the White House called for billions of dollars in funding reductions, senators and representatives are rescinding the proposed cuts and even boosting funds for basic research.

© Kendrick Brinson for The New York Times

Each year, the president submits a budget request to Congress in advance of the annual appropriations process, but only Congress has the power of the purse.

Could egg defect breakthrough help stop the ‘horrible IVF rollercoaster’?

Results of research offer hope to older women – but it will be several years at least before technique is approved

It is a rollercoaster of emotional extremes that will be familiar to many who have gone through IVF treatment: hope and joy turns to despair and back again. This is especially true for women over 35, the age when IVF success rates decline steeply and for whom the only real way to improve the odds is to keep trying.

While there has been huge progress in IVF in the past decades, including the advent of genetic testing, egg freezing and techniques to overcome male infertility, the primary cause of age-related female infertility – egg quality – has not been directly addressed.

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© Photograph: Maxx-Studio/Shutterstock

© Photograph: Maxx-Studio/Shutterstock

© Photograph: Maxx-Studio/Shutterstock

Quebec’s Lake Rouge vanished – but was it a freak natural event or caused by human actions?

10 janvier 2026 à 07:00

Experts and community trying to untangle mystery of outburst that saw water travel almost 10km overland into a bigger lake

Manoel Dixon had just finished dinner one night last May when a phone dinged nearby with a Facebook message.

Dixon, 26, was at his family’s hunting camp near their northern Quebec home town of Waswanipi. They knew the fellow hunter who was messaging Dixon’s father, but what he wrote didn’t make sense.

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© Photograph: Snap Quebec

© Photograph: Snap Quebec

© Photograph: Snap Quebec

Une protéine ciblée pourrait régénérer le cartilage articulaire et révolutionner le traitement de l’arthrose

9 janvier 2026 à 22:00

Des chercheurs de l’université Stanford ont identifié une protéine unique dont l’inhibition permettrait de restaurer le cartilage dégradé par le vieillissement. Cette découverte, validée sur des modèles murins, ouvre des perspectives thérapeutiques prometteuses pour soulager les millions de personnes souffrant d’arthrose et potentiellement éviter les remplacements articulaires chirurgicaux. La protéine 15-PGDH, déjà largement associée au ... Lire plus

L'article Une protéine ciblée pourrait régénérer le cartilage articulaire et révolutionner le traitement de l’arthrose est apparu en premier sur Fredzone.

Quatre facteurs précurseurs identifiés dans la quasi-totalité des accidents cardiovasculaires

9 janvier 2026 à 21:00

Les crises cardiaques et accidents vasculaires cérébraux ne surviennent pratiquement jamais de façon imprévisible. Une vaste recherche menée auprès de plus de 9 millions d’adultes américains et sud-coréens révèle que presque tous les individus développant une pathologie cardiaque et subissant un événement cardiovasculaire majeur présentent au moins l’un de quatre facteurs prédictifs essentiels. L’hypertension artérielle, ... Lire plus

L'article Quatre facteurs précurseurs identifiés dans la quasi-totalité des accidents cardiovasculaires est apparu en premier sur Fredzone.

Le télescope Hubble pourrait cesser de fonctionner dès 2029 : la fin annoncée d’une icône spatiale

9 janvier 2026 à 19:40

Après plus de trois décennies passées à observer l’Univers, le télescope spatial Hubble approche d’un tournant critique. Selon de nouvelles estimations présentées début janvier lors d’une réunion de l’American Astronomical Society, l’observatoire pourrait réintégrer l’atmosphère terrestre bien plus tôt que prévu. Une orbite qui se dégrade plus vite …

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L’article Le télescope Hubble pourrait cesser de fonctionner dès 2029 : la fin annoncée d’une icône spatiale est apparu en premier sur KultureGeek.

[CES 2026] Le robot humanoïde Alex sait interagir sans être contrôlé par un opérateur

9 janvier 2026 à 17:13

Au CES 2026 de Las Vegas, les démonstrations spectaculaires ne manquent pas, mais certaines marquent encore davantage les esprits. C’est le cas d’Alex, un robot humanoïde présenté par la start-up Werobotics, qui a surpris les visiteurs par sa capacité à interagir physiquement avec une fluidité rarement observée dans …

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L’article [CES 2026] Le robot humanoïde Alex sait interagir sans être contrôlé par un opérateur est apparu en premier sur KultureGeek.

Face masks ‘inadequate’ and should be swapped for respirators, WHO is advised

Experts are urging guideline changes on what health professionals should wear to protect against flu-like illnesses including Covid

Surgical face masks provide inadequate protection against flu-like illnesses including Covid, and should be replaced by respirator-level masks – worn every time doctors and nurses are face to face with a patient, according to a group of experts urging changes to World Health Organization guidelines.

There is “no rational justification remaining for prioritising or using” the surgical masks that are ubiquitous in hospitals and clinics globally, given their “inadequate protection against airborne pathogens”, they said in a letter to WHO chief Dr Tedros Adhanom Ghebreyesus.

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© Composite: Robin Utrecht/Shutterstock

© Composite: Robin Utrecht/Shutterstock

© Composite: Robin Utrecht/Shutterstock

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