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 ...

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, ...

As many as 48 bags containing human remains were discovered and recovered from a clandestine grave near Guadalajara, Mexican authorities said Thursday. Guadalajara is the capital of Jalisco state, ...

One that caught attention from many was a type of sea mollusk that washed ashore on South Padre Island in late May.