IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens ...

Evidence of alien life or cosmic pyramid scheme? A documentary filmmaker sparked a discussion of advanced Martian ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about ...

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

By snatching chloroplasts from algae, animals called sacoglossans produce their own energy through photosynthesis ...

The odd pyramid-like structure found in the largest canyon network in the solar system has sparked theories the Red planet ...

Want to find little-known gems hiding in Colorado that tourists miss? These 8 destinations offer stunning beauty and ...

A sample collected by the Hayabusa 2 spacecraft from the spinning top-like asteroid contained the nucleobases adenine, ...