In one of the most baffling discoveries of the last decade, scientists have found a clue in a cave to how life might survive ...

The truth is out there — and late President George H.W. Bush apparently knew it — telling a federal official that an alien made contact with humans at a secretive New Mexico air base in 1964, ...

A mysterious metal shard, once thought to be a piece of a UFO that crashed in 1947, has sparked years of wild speculation. UFO enthusiasts and alien theorists hoped it could be a clue that would ...