Like the lead character of “Project Hail Mary,” some scientists are proposing ways that life might exist beyond a star’s ...

The FDA has released draft guidance that aims to clear up how drug developers can use alternative testing – but that doesn’t mean animal testing in the US is over.

Scientists can now do research on live human organs without petri dishes or animal testing.

The ocean is still one of the biggest mysteries on Earth, and the deeper you go, the stranger it gets. Far below the surface, ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

Before you enter your office’s voting pool, test your knowledge with the quiz that separates the ‘Sinners’ from the winners.

An exhibit at New York's Museum of the Moving Image explores how medical imaging technologies like CT scans and X-rays have reshaped our view of the body — and ourselves.