We know that agriculture began in the Fertile Crescent about 12,000 years ago and then spread across Europe between 9,000 and 6,000 years ago. But what exactly was it that spread? Was it the idea of agriculture or agriculturalists themselves? Just-published work on the DNA of modern and ancient pigs says it was probably a bit of both. It seems that Middle Eastern farmers migrated into Europe carrying their agrobiodiversity with them — crops and domesticated animals. But, as far as the pig was concerned anyway, they soon adopted a locally domesticated version in preference to the Middle Eastern type they had brought along.
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