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

Andy Weir discusses his science-fueled novel “Project Hail Mary,” which has been adapted into a film that opens in theaters ...

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological self-destruction — and it therefore may not want to talk to us.

Most people have some amount of Neanderthal DNA from the extinct cousins of modern humans who lived in Europe and Asia until about 40,000 years ago. New research on available Neanderthal genetic ...