Inventions That Shook the World
This educational series explores each decade’s life-changing inventions: from the radio to the machine gun, and everything in between.
S01:E05 - The 1940s
War is the driving force behind much of the innovation in the 1940s. The microwave is born after a self-taught inventor realizes that military equipment is responsible for melting a chocolate bar in his pocket. And, a sailor returns home and hits pay dirt with an invention that finally brings cats in from the cold: kitty litter.