100 Greatest Discoveries

Earth Sciences

E2    Dec 14, 2004    45m    TV-Y
Twelve landmark steps to understanding the Earth's structure: Richard Oldham's theory of a liquid core, Inge Lehmann's conclusion that the core is solid iron, Alfred Wegener's premise of continental drift, Harry Hess's findings on seafloor spreading, plate tectonics, Leon Teisserenc de Bort's discovery of atmospheric layers, the theory of global warming, Victor Hess's studies of cosmic rays, Bernard Brunhes's assertion of magnetic field reversal, Charles Lyell's ideas on geological change, Bertram Boltwood's formulas for radiometric dating, and Milutin Milankovitch's ideas on periodic ice ages.
Where to Watch Earth Sciences
Cast of Earth Sciences
  • Bill NyeSelf - Host
 
  •   
  •   
  •   
  •   
  •   
  •   
  •   

Take Plex everywhere

Watch free anytime, anywhere, on almost any device.
See the full list of supported devices