How Salt Shaped Civilization

From the very first settlement in recorded history, early humans knew that to survive in the new age of agriculture, they'd need two things: access to water, and a source of salt. Without salt, our meats and vegetables wouldn't last long enough to help us survive droughts, monsoons, and long periods between harvests. Our bodies wouldn't have the necessary nutrients to live, and the entire experiment in building permanent villages might have failed.

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