Modern Marvels · S15E36
Salt
2008-12-01 · 44 min
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.
Modern Marvels · S15E36
2008-12-01 · 44 min
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.