Explore how half of Earth’s water originated from the planet’s inception and how the other half was deposited by comets. ➡ 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 filmmakers, Nat Geo gets you …

The highlands of Papau New Guinea…a place so remote the people who live here are among the most isolated. One of the native tribes practices an ageless ritual so secret that it has never before been witnessed by some members of the tribe. See All National Geographic Videos http://video.nationalgeographic.com/video/?source=4001 ➡ …

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Luang Prabang, the ancient royal capital of Laos, is known as the “city of the Golden Buddha,” and is home to a thousand monks and dozens of beautiful temples. ➡ 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 …