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

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

Syfy's highly-rated sci-fi drama was cancelled after four seasons but it's still popular on streaming services. Get all the ...

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.