Global warming could do more than just melt polar ice. It could change our maps, and displace people from cities and tropical islands. See all National Geographic videos: http://video.nationalgeographic.com/v... ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get More 101 Videos: http://bit.ly/NatGeo101 About National Geographic’s 101 Series: Explore and experience the forces that shape the world around us. 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 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 closer to the stories that matter and past the edge of what's possible. Global Warming 101 | National Geographic https://youtu.be/oJAbATJCugs National Geographic https://www.youtube.com/natgeo