Aliens are back in vogue. Haven't you heard? Fascination with little green men piloting saucer-shaped UFOs was long the purview of tinfoil-hat wearing conspiracy theorists and "X-Files" devotees. But ...

A little over a month after former President Barack Obama re-opened the door to discussions about extraterrestrial life, a new study shows how frequently people think they could have spotted aliens.

Add Yahoo as a preferred source to see more of our stories on Google. By the age of 32, Americans plan their social calendars ...