15% of humans have a rare bloodtype known as Rh negative. See what experts have to say about a possible link to extraterrestrial modification of humans in this collection of scenes from "The Prototypes." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

You think the moon is natural, they say it was built. Watch new episodes of Ancient Aliens Fridays 9/8c on HISTORY. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our ...

An ancient mysterious crash may be evidence of advanced technology. Watch new episodes of Ancient Aliens Fridays 9/8c on HISTORY. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full ...