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.

Evidence of alien life or cosmic pyramid scheme? A documentary filmmaker sparked a discussion of advanced Martian civilizations after sharing footage that appeared to depict a “three-sided pyramid” on ...

The odd pyramid-like structure found in the largest canyon network in the solar system has sparked theories the Red planet was once inhabited by an ancient civilisation ...

The oceans of the Cretaceous of North America teemed with life. Gigantic fish and enormous marine reptiles hunted the Western ...

Sharks might not be a natural biological group, with most species potentially closer kin to rays than to an oddball group of sharks.