Salt

Used to preserve and flavour food for thousands of years, salt plays an important part in maintaining the correct balance of minerals in the body. We should consume an average of 8 grams per day, but modern life and our reliance on pre-packaged food means that this level is often exceeded. This is a broad examination of the subject, from the history of the exploitation of salt to how and where it is mined today, its industrial uses, how desalination plants work, the flora and fauna that thrive in salt pans and flats ...and of course why too much salt on your chips is bad for you.