Be Smart

Why Does the Earth Have Layers?

2014 • E37    Oct 13, 2014    7m
…or why we live on an onion made of magma.

Where to Watch Be Smart - 2014 • E37

 

  •   
  •   
  •   
  •   
  •   
  •   
  •   

Take Plex everywhere

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