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Kseniia Petrova, a researcher at Harvard, has argued that she was vindictively prosecuted after her arrest in 2025.

The space agency estimates that there is a one-in-2,100 chance that debris from the Neil Gehrels Swift Observatory could injure someone on the ground.

A series of storms has added to reservoirs in the Colorado River basin, but the long-term water outlook remains bleak.

In the 2022 midterms, Democrats made global warming an issue. Things have changed.

A monthslong G.O.P. effort culminated in a scathing report about emails and other exchanges within the American Psychological Association.

Ice, experts said, can change the shape of a plane’s wing, disrupting its aerodynamics.

In one case, 75,000-year-old bones reveal what may be the earliest identifiable victim of death by wooden spear.

The feeling of existential loss was long thought to be uniquely human. But studies of coyotes, cockatoos and other creatures are prompting some scientists to reconsider.

There are more than 1.5 million known zoological species on Earth, with at least as many enigmas. Here are our top 10.

Researchers are exploring novel ways to treat, even prevent, the brain disease C.T.E. One of the most surprising: near-infrared light.