Extras

Video thumbnail: Breakthrough: The Ideas That Changed the World Hollywood Icon Hedy Lamarr

Breakthrough: The Ideas That Changed the World

Hollywood Icon Hedy Lamarr

Hedy Lamarr invents a way to control torpedoes remotely.

Hollywood Icon Hedy Lamarr

Video thumbnail: Breakthrough: The Ideas That Changed the World Polybius Square

Breakthrough: The Ideas That Changed the World

Polybius Square

Polybius invents a code so words can be exchanged between battalions freely.

Polybius Square