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Friday, Dec 12th

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Three more Chinese astronauts are now stranded in space following successful rescue of their colleagues

3 more Chinese astornauts strandedThree more Chinese astronauts, or taikonauts, are now marooned in space following the successful return of their previously stranded comrades. The latest development highlights a potential flaw in China's space protocols, experts say, which could put astronauts needlessly at risk.

The latest stranded trio — Zhang Lu, Wu Fei and Zhang Hongzhang — are the crew of the Shenzhou-21 mission. They have been living onboard China's Tiangong space station since Oct. 31, shortly after they were launched into space by a Long March 2F rocket. Their mission was to take over from the station's incumbent Shenzhou-20 crew, made up of taikonauts Wang Jie, Chen Zhongrui and Chen Dong, who were originally due to return to Earth on Nov. 5.

However, after a successful handover period, the Shenzhou-20 crew's return trip was called off at the last minute when a piece of suspected space junk hit their return capsule. After tests revealed a crack in the viewing port of the struck spacecraft, the Shenzhou-20 crew boarded the return capsule designated for the Shenzhou-21 crew and successfully returned to Earth on Friday (Nov. 14).

But while many were quick to celebrate the return of the Shenzhou-20 crew, who completed the longest single spaceflight by any taikonauts (204 days), this now means that the Shenzhou-21 crew has no way of returning to Earth themselves, Live Science's sister site Space.com reported.

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James Watson, co-discoverer of DNA's double helix who later courted controversy, dead at 97

James WatsonJames D. Watson, the brilliant but controversial American biologist whose 1953 discovery of the structure of DNA, the molecule of heredity, ushered in the age of genetics and provided the foundation for the biotechnology revolution of the late 20th century, has died at the age of 97.

His death was confirmed by Cold Spring Harbor Laboratory on Long Island, where he worked for many years. The New York Times reported that Watson died this week at a hospice on Long Island.

In his later years, Watson's reputation was tarnished by comments on genetics and race that led him to be ostracized by the scientific establishment.

Even as a younger man, he was known as much for his writing and for his enfant-terrible persona − including his willingness to use another scientist's data to advance his own career − as for his science.

His 1968 memoir, "The Double Helix," was a racy, take-no-prisoners account of how he and British physicist Francis Crick were first to determine the three-dimensional shape of DNA. The achievement won the duo a share of the 1962 Nobel Prize in medicine and eventually would lead to genetic engineering, gene therapy and other DNA-based medicine and technology.

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Nobel Prizes in Chemistry 2025 Awarded to 3

Nobel winners in ChemistryNobel winnerChemistry winnerSusumu Kitagawa, Richard Robson and Omar M. Yaghi are awarded the Nobel Prize in Chemistry 2025 for the development of a new type of molecular architecture. The constructions they created – metal–organic frameworks – contain large cavities in which molecules can flow in and out. Researchers have used them to harvest water from desert air, extract pollutants from water, capture carbon dioxide and store hydrogen.

An attractive and very spacious studio apartment, specifically designed for your life as a water molecule – this is how an estate agent might describe one of all the metal–organic frameworks that laboratories around the world have developed in recent decades.

Other constructions of this type are tailormade for capturing carbon dioxide, separating PFAS from water, delivering pharmaceuticals in the body or managing extremely toxic gases. Some can trap the ethylene gas from fruit – so they ripen more slowly – or encapsulate enzymes that break down traces of antibiotics in the environment.

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Nobel in Physics awarded to three American professors

Nobel physicsThe Nobel physics prize is awarded by the Royal Swedish Academy of Sciences and includes a prize sum totalling 11 million Swedish crowns ($1.2 million) that is shared among the winners if there are several, as is often the case.

The Nobel Prizes were established through the will of Alfred Nobel, who amassed a fortune from his invention of dynamite. Since 1901, with occaPhysics was the first category mentioned in Nobel's will, likely reflecting the prominence of the field during his time. Today, the Nobel Prize in Physics remains widely regarded as the most prestigious award in the discipline.

Past winners of the Nobel physics prize include some of the most influential figures in the history of science, such as Albert Einstein, Pierre and Marie Curie, Max Planck and Niels Bohr, himself a pioneer of quantum theory.

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Scientists fear microscopic 'mirror life' could wipe out humanity

Pasteur

Kate Adamala had been working on something dangerous.

At her synthetic biology lab, Adamala had been taking preliminary steps toward creating a living cell from scratch with one key twist: all the organism's building blocks would be flipped. Changing these molecules would create an unnatural mirror image of a cell, as different as your right hand from your left.

The endeavor was not only a fascinating research challenge, but could be used to improve biotechnology and medicine. But as Adamala and her colleagues talked with biosecurity experts about the project, grave concerns began brewing.

"They started to ask questions like 'have you considered what happens if that cell gets released or what would happen if it infected a human?'" said Adamala, an associate professor at the University of Minnesota. They hadn't.

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‘Could become a death spiral’: scientists discover what’s driving record die-offs of US honeybees

BeekeepBret Adee is one of the largest beekeepers in the US, with 2 billion bees across 55,000 hives. The business has been in his family since the 1930s, and sends truckloads of bees across the country from South Dakota, pollinating crops such as almonds, onions, watermelons and cucumbers.

Last December, his bees were wintering in California when the weather turned cold. Bees grouped on top of hives trying to keep warm. “Every time I went out to the beehive there were less and less,” says Adee. “Then a week later, there’d be more dead ones to pick up … every week there is attrition, just continually going down.”

Adee went on to lose 75% of his bees. “It’s almost depressingly sad,” he says. “If we have a similar situation this year – I sure hope we don’t – then we’re in a death spiral.”

It developed into the largest US honeybee die-off on record, with beekeepers losing on average 60% of their colonies, at a cost of $600m (£440m).

Scientists have been scrambling to discover what happened; now the culprits are emerging. A research paper published by the US Department of Agriculture (USDA), though not yet peer-reviewed, has found nearly all colonies had contracted a bee virus spread by parasitic mites that appear to have developed resistance to the main chemicals used to control them.

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US arrests another Chinese scientist for allegedly smuggling biological material

toxic pathogens

A Chinese scientist was arrested while arriving in the US at the Detroit airport, the second case in days involving the alleged smuggling of biological material, authorities said on Monday.

The scientist is accused of shipping biological material months ago to staff at a laboratory at the University of Michigan. The FBI, in a court filing, described it as material related to certain worms and requires a government permit.

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