Hank introduces us to biogeochemical cycles by describing his two favorites: carbon and water. The hydrologic cycle describes how water moves on, above, and below the surface of the Earth, driven by... Read more »
Storm Chaser Tim Samaras is in Tornado Alley, looking for trouble. ➡ 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... Read more »
An extreme weather compilation of tornadoes caught on tape. A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus... Read more »
