European Space Agency astronaut used an International Space Station treadmill to march 26.2 miles (42.2 kilometers) to the ...

Researchers put human sperm into a microgravity simulation chamber designed to mimic the female reproductive tract and tested ...

Sperm whales are known to socialize, but scientists were stunned when they saw a group of sperm whales gather as one of them ...

Security feeds and traffic cameras have helped guide some of the most audacious targeted killings in modern history. Security ...

People are buying helmets, face masks, vests and beds that emit long-wavelength light. Beneath the hype, there is some interesting biology.

Skin conditions such as psoriasis often flare up in the same spots throughout one’s life. Now scientists think they know why ...

More than 1,500 mathematicians are demanding that their field’s most prestigious meeting be moved from the U.S.

Participants in the new study, which was published today in Science, preferred the sycophantic AI models to other models that gave it to them straight, even when the flatterers gave participants bad ...

NASA’s Swift space telescope is doomed to burn up in Earth’s atmosphere later this year. A daring mission to boost it to safety could have big implications for science ...

The Arctic sea ice maximum this year effectively tied for the lowest ever on record, with major implications for polar ecosystems and global warming ...

Climate scientist Kate Marvel talked to Scientific American about her decision to leave NASA amid federal government turmoil ...

A start-up has surprised the scientific community with a breakthrough: translating a modern proof into a programming language for verification using AI. But not everyone is celebrating ...