...Agriculture was invented in the Middle East, but many researchers found it hard to believe that people from that part of the world would have embarked on an endless march across the Bosporus and into the north.
Jens Lüning, a German archaeologist who specializes in the prehistoric period, was influential in establishing the conventional wisdom on the developments, namely that a small group of immigrants inducted the established inhabitants of Central Europe into sowing and milking with "missionary zeal." The new knowledge was then quickly passed on to others. This process continued at a swift pace, in a spirit of "peaceful cooperation," according to Lüning.
But now doubts are being raised on that explanation. New excavations in Turkey, as well as genetic analyses of domestic animals and Stone Age skeletons, paint a completely different picture:
* At around 7000 BC, a mass migration of farmers began from the Middle East to Europe.
* These ancient farmers brought along domesticated cattle and pigs.
* There was no interbreeding between the intruders and the original population.
Mutated for Milk
The new settlers also had something of a miracle food at their disposal. They produced fresh milk, which, as a result of a genetic mutation, they were soon able to drink in large quantities. The result was that the population of farmers grew and grew.
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http://www.spiegel.de/international/zeitgeist/0,1518,723310,00.htmlA couple of weeks old, but I don't think it's been posted...