Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...

Claims of US government knowledge of multiple alien species resurface as former officials allege awareness, but Pentagon reviews find no evidence of extraterrestrial involvement.

A former CIA-linked physicist's comments about 'four alien species' have reignited UFO conspiracy theories online.