Salt, that seasoning you put on food, is also one of the most important substances on Earth. It has been so important to humankind that it has caused wars to erupt and civilizations to be born or to crumble. Learn all about its role in human history, the chemistry of salt, ways of obtaining common salt, the purpose of salt in the human body, why we can't drink sea water, and more! It has far more significance than you ever would have imagined!

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Salt in History (2:55); --Common Salt (2:58); -- Salt and Organisms (3:13); -- Obtaining Salt (3:12); -- Salt Summary (1:56); -- Credits: Salt (0:42);.