Big History (2013)

Season 1: Episode 1

We all know that mankind can't live without air, food and water...the same is true of salt. The salt on your table is a key to unlocking the story of our planet and the cosmos. Big History reveals how this simple molecule underpins our civilization, launched wars, built monuments like the Great Wall of China, sparked revolutions from India to France...and it's even the substance that makes up our thoughts.