Ancient Aliens: Hieroglyphics Discovery Alters Timeline of Human History (Season 15)

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 #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: Find out more about the show and watch full episodes on our site: Check out exclusive The HISTORY Channel content: History Newsletter - Website - Facebook - Twitter - “Ancient Aliens“ explores the controversial theory that extraterrestrials have visited Earth for millions of years. The HISTORY® Channel, a division of A E Netwo