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Human eggs ‘rejuvenated’ in advance that could boost IVF success rates

Exclusive: research suggests supplementing eggs with a key protein reduces age-related defects, raising hopes of improved IVF for older women

Scientists claim to have “rejuvenated” human eggs for the first time in an advance that they predict could revolutionise IVF success rates for older women.

The groundbreaking research suggests that an age-related defect that causes genetic errors in embryos could be reversed by supplementing eggs with a crucial protein. When eggs donated by fertility patients were given microinjections of the protein, they were almost half as likely to show the defect compared with untreated eggs.

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© Photograph: David Gregs/Alamy

© Photograph: David Gregs/Alamy

© Photograph: David Gregs/Alamy

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‘Gifted learner dogs’ can learn words by eavesdropping, study says

Certain canines can learn using cues from people’s gaze, gestures, attention and voices, researchers find

Whether it is a piece of food or a four-letter expletive, words can be learned by young children overhearing adults – but now researchers have found certain dogs can do something similar.

Scientists have discovered canines with the unusual ability to learn the names of myriad objects can pick up such labels by eavesdropping on conversations.

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© Photograph: Bobbie Kurivial

© Photograph: Bobbie Kurivial

© Photograph: Bobbie Kurivial

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Fungi: Anarchist Designers review – a perverse plunge into mushroom mayhem, from stinkhorns to zombie-makers

Nieuwe Instituut, Rotterdam
They have poisoned emperors, taken over insect brains and survived atomic bombs. This Dantean journey through fungal hell is riveting – though frogs may disagree

Sylvia Plath’s poem Mushrooms is a sinister paean to the natural world. Her observations on fungi are freighted with foreboding, noting how “very / Whitely, discreetly, / Very quietly” they “Take hold on the loam, / Acquire the air”. The poem ends: “We shall by morning, / Inherit the earth. / Our foot’s in the door.”

Plath’s ominous ode from 1959 forms the opening salvo in an exhibition dedicated to fungi’s creepy omniscience. Far from merely getting a foot in the door, the door has been blasted off its hinges by fungi’s preternatural capacity to reproduce, spread, evolve – and annihilate. How they thrive with a perverse intensity on discarded, dead and dying things, impelling the cycle of decay and regrowth. As coprophiliacs, necrophiliacs and silent assassins, they are legion, and have been around for over a billion years.

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© Photograph: Aad Hoogendoorn

© Photograph: Aad Hoogendoorn

© Photograph: Aad Hoogendoorn

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Nasa considering early return of crew from ISS due to medical reasons

Astronaut aboard the International Space Station is in stable condition, Nasa said, and a spacewalk was canceled

Nasa is considering a rare early return of its crew from the International Space Station (ISS) over an unspecified medical issue involving one of the astronauts, after cancelling a planned spacewalk that had been scheduled for Thursday, the agency said.

A Nasa spokesperson said the astronaut with the medical concern, whom she did not identify, was in a stable condition on the orbiting laboratory.

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© Photograph: AP

© Photograph: AP

© Photograph: AP

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If geoengineering is ever deployed in a climate emergency, transparency is key | Ines Camilloni

We must not let geoengineering be shaped behind closed doors. Climate justice demands an inclusive approach

As the world faces the challenges of the climate crisis and critical threshold levels or tipping points may be reached soon, a disputable idea is gaining momentum as a potential solution: solar geoengineering – the deliberate reflection of sunlight to cool the planet. Advocates argue it could buy us time. Critics warn of unknown risks. Some see it as a possible emergency break if temperatures spiral out of control. Others call it a dangerous distraction that undermines meaningful climate action.

Research into solar geoengineering is advancing, including exploration of techniques such as stratospheric aerosol injection, which would involve spraying tiny reflective particles into the upper atmosphere to mimic the cooling effect of volcanic eruptions, and marine cloud brightening, which aims to enhance the reflectivity of low-lying marine clouds. While stratospheric aerosol injection is not being conducted, these technologies are being studied with increasing urgency in the global north. In the global south, however, they remain largely invisible to public discourse and policymaking.

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© Photograph: AP

© Photograph: AP

© Photograph: AP

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Artemis 2 : la NASA accélère pour la première mission habitée autour de la Lune depuis Apollo

Cette fois on y est : après des années de reports, la mission Artemis 2, première mission habitée du programme lunaire américain depuis l’ère Apollo, entre dans sa phase finale de préparation. L’agence spatiale envisage désormais le déploiement imminent de sa fusée géante Space Launch System (SLS), ce …

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People who stop taking weight-loss jabs regain weight in under two years, study reveals

Analysis finds those who stopped using medication saw weight return four times faster compared with other weight loss plans

People who stop taking weight loss jabs regain all the weight originally lost in under two years, significantly faster than those on any other weight loss plan, according to a landmark study.

Weight loss medications, known as GLP-1 agonists, were originally developed as treatment for diabetes and work by mimicking the glucagon-like peptide (GLP) 1 hormone which helps people feel full.

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© Photograph: Tatsiana Volkava/Getty Images

© Photograph: Tatsiana Volkava/Getty Images

© Photograph: Tatsiana Volkava/Getty Images

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New Dietary Guidelines Abandon Longstanding Advice on Alcohol

Now the government’s recommendation is to “limit” drinking, without specifying safe amounts for men and women. The guidelines no longer warn of risks like cancer.

© Jason Henry for The New York Times

New guidelines issued on Wednesday say that people should consume less alcohol “for better overall health” and “limit alcohol beverages,” but they don’t recommend clear limits.
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