Sooo...
I read salt was precious in old times because it preserved food so well.
Also salt kills snails superfast because it... drains them of water?
We use salt in food for some reason (The taste? Hard to believe)
Salt is in the ocean (duh) and if you drink saltwater you dehydrate to death. (How can a tiny amount of salt in the water - outhydrate so much water?)
I also read that you can use salt+water in beer/soda to lower the temperature really fast to make it cooler.
Now. What Im really wondering is how such a simple thing like salt can have such a strong effect, and such a variety of uses in so many areas. Why is salt so special?