Researchers believe octopuses possess extraterrestrial DNA. See more in this clip from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 8/7c, and next day on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens ...

It's the oldest question on Earth. Where did we come from? Some people may thank a creator from above, but what if the hand that created humanity wasn't divine? What if aliens brought life to Earth? How could a meteor carry life to our planet? Could microbes survive the cold vacuum of space? And ...