Are aliens real? Scientists have been hunting for extraterrestrial life since the time of Aristotle

Aristotle's views on the nature of the cosmos dominated the Ancient Greek world. He argued that there's only one world, at ...
Wired

The Caves That Could Help Us Find, or Become, Aliens

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...