Modern Marvels

Season 15 Episode 36: Salt

It's the only rock we eat, and we need it to live. History has shown that those who have salt rule the world--and today, this versatile substance has 14,000 known uses.

Genre:

Documentary

Seasons:

23

Episodes:

707

Cast:

Quality:

HD

Duration:

44 min

First Air:

1993

Rating:

8.1