Archaeologists and National Geographic grantees George and David Stuart offer keen insights into the art and culture of the Mayans. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get More Nat Geo Live: http://bit.ly/MoreNatGeoLive About Nat Geo Live (National Geographic Live): Thought-provoking ...

Is it possible that extraterrestrial beings visited our ancient ancestors? Known Universe: Decoding the Skies : http://channel.nationalgeographic.com/series/known-universe/4502/Overview ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's ...

Scientists already know about a vast number of exoplanets, or worlds beyond our solar system: telescopes have helped us catalogue thousands already, with many more to come. But it is far more difficult to know what conditions might be like on those planets, since they are so different. In order ...

What would aliens on other planets actually look like? ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and ...