How Elevators Changed the World | Origins: The Journey of Humankind

Once we had the tools to erect tall buildings, their height was still limited by one thing: our willingness to walk up all those stairs. Enter: the Otis elevator. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all clips of Origins: The Journey of Humankind here: http://bit.ly/WatchNGOrigins About Origins: The Journey of Humankind: Hosted by Jason Silva, Origins: The Journey of Humankind rewinds all the way back to the beginning and traces the innovations that made us modern. 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. How Elevators Changed the World | Origins: The Journey of Humankind https://youtu.be/UtkAJscxbZU National Geographic https://www.youtube.com/natgeo