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

From phone boxes and flux capacitors to black holes and hot tubs, sci-fi has created plenty of ways to explore the fourth ...

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

Jeff Bezos' company has partnered with researchers at NASA's Jet Propulsion Laboratory and the California Institute of Technology to study how to integrate Earth defense capabilit ...