Modern Marvels
S14 E34
Salt
It's the only rock we eat, and we need it to live. Travel around the world to see how salt is harvested—and put to some of its 14,000 known uses.
Modern Marvels
S14 E34
It's the only rock we eat, and we need it to live. Travel around the world to see how salt is harvested—and put to some of its 14,000 known uses.