Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

Scientists have pieced together a pretty clear picture of what life was like on Earth thousands, even millions of years ago.

Alien life may not need the kind of home humans instinctively search for. Some of the strangest possibilities begin once ...

When we think of extraterrestrial intelligence that might be out there among the stars, we tend to think of creatures not too ...