Salt
- Episode aired Feb 7, 2009
- TV-G
- 44m
How Stuff Works looks at salt and examines where it comes from, how it is used as a preservative, why it is necessary for life, how it is used in industry, and why it is dangerous.How Stuff Works looks at salt and examines where it comes from, how it is used as a preservative, why it is necessary for life, how it is used in industry, and why it is dangerous.How Stuff Works looks at salt and examines where it comes from, how it is used as a preservative, why it is necessary for life, how it is used in industry, and why it is dangerous.