Presenters: John Jennings and Donn Anderson Landsat satellites have been showing us our Earth from space since Landsat 1 launched in 1972! Developed jointly by NASA and the U.S. Geological...
Presenter: Gary Sohn The geographic North Pole is a fixed graphic point, but the magnetic north pole has been wandering about the northern part of our globe for millions of...
Presenter: Gary Sohn Next to the Manhattan Project to build the atomic bomb, this was once the second most important United States defense security program. The U.S. was not allowed...
