Elon Musk has spent years oscillating between joking that he is an alien and warning that contact with real extraterrestrials ...

At Davos, the billionaire said his belief that "it might only be us" in the cosmos drives Tesla, SpaceX, and his vision for ...

H.R. Giger's original creature design continues to frighten audiences decades after it debuted in "Alien," but does the ...

Signs of impending doom are all around, especially as a potential time change for the "Doomsday Clock" looming. See other signs of impending doom.