Researchers believe extraterrestrial beings took part in building the great pyramids. See more in this clip from Nostradamus Effect. #NostradamusEffect Subscribe for more from Nostradamus Effect and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Watch more ...

Ancient Astronaut Theorists discover evidence of a writing system that would radically alter the timeline of human history, in this clip from Season 15, "The World Before Time." Watch all new episodes of Ancient Aliens, Fridays at 8/7c, and next day on The HISTORY Channel website at ...

Check out our video: Are There Aliens in the Bible? https://youtu.be/ExNfEFsV6RI Source