As NASA prepared astronauts for its second mission into space, National Geographic had exclusive behind-the-scenes access for ...

Melting ice in the Arctic is causing an increasing amount of freshwater to enter the North Atlantic, which is expected to ...

In this video, we investigate how the Panama Canal Locks are used to raise millions of tons of ships up 87ft, from sea level to the height of Gatun Lake. We will also find out how water-saving basins ...