Is the government hiding something from the public about Unidentified Aerial Phenomena? See more in this scene from Ancient Aliens Season 2, Episode 2, "Extraterrestrial Informants." Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...

The icy polar regions of Earth have captivated adventurers, explorers, and UFO enthusiasts for centuries. Learn more in this clip from Season 2, Episode 6, "MYSTERIES BENEATH THE ICE". Watch your favorite episodes of Ancient Aliens on The HISTORY Channel website at http://history.com/schedule. ...