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 worldclass scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.
Get More National Geographic:
Official Site: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
Earth the Biography: Oceans : http://channel.nationalgeographic.com...
Origins of Oceans | National Geographic
• Origins of Oceans | National Geographic
National Geographic
/ natgeo