Earth 101, National Geographic

Earth is the only planet known to maintain life. Find out the origins of our home planet and some of the key ingredients that help make this blue speck in space a unique global ecosystem. Subscribe: , NationalGeographic, Earth, Educational 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 sto