Why did such a fundamental change in the relationship between humanity and the natural environment take place all over the world between eleven and four thousand years ago? Why did agriculture appear almost simultaneously in so many different locations throughout the world? And why did agriculture begin in each region with a different mix of plants and animals from those that were domesticated in the Fertile Crescent, rather than spreading from a single point of origin in the Middle East? So the question remains: What was new or different about the humans of the Neolithic? What abilities did
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