An audio tape reportedly exists of a UFO briefing between Air Force officials and scientists in 1952.

Tenn., shares a warning he received regarding his investigations on a new episode of 'Hang Out with Sean Hannity.' ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. The FIFA World Cup has officially kicked off, four years since Argentina's victory, and Lionel Messi ...

NBC News’ Gadi Schwartz previews the new exhibit at the California Science Center, where visitors will soon be able to view ...