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Last night, two women publicly accused the famed anti-aging researcher of inappropriately bringing up sex in the workplace, and they say they are not his only victims.

Engineered antibodies trap and immobilize human sperm in the reproductive tract of female sheep, paving the way for possible use as a nonhormonal contraceptive in people.

Depleting intestinal fungi allows radiation to effectively fight cancer, likely because the microbes influence the antitumor immune response.

The finding of the Ebola-like disease, which killed a man in Guinea, has prompted public health measures.

The United Nations Intergovernmental Panel on Climate Change says some changes are already irreversible, and warns of even more dire ramifications if global carbon emissions aren’t reduced immediately.

An ability to build up higher concentrations of viral particles in people’s airways and mutations that might boost its ability to infect human cells could be what gives the Delta variant its evolutionary edge.

The genomes of living animals are littered with DNA from long-gone relatives, providing a lens on evolution, past extinctions, and perhaps even solutions to agricultural problems.

A long noncoding RNA from humans appeared to help the enzyme phenylalanine hydroxylase work better in a mouse model of phenylketonuria, the disorder characterized by reduced activity of that enzyme.

The organization implored nations to wait on booster shots until the global vaccination rate increases, but several of the world’s more well-off countries have expressed their intentions to offer them regardless.

Rather than relying on samples that need to be shipped in glass vials and on ice, researchers have developed a new method that allows mouse sperm to be sent easily at room temperature using standard mail delivery.

Surveillance networks set up to detect outbreaks among pets could one day have public health uses too.  

The plan’s signatories seek to make the results of their funded research available to all, but some scientists say the transition to open access has led to climbing publication fees and could exacerbate global disparities.