June 21, 2011 5:18 AM Subscribe
"We come up with two new mysteries for every one that we solve," he [Schmidt] says. Still, he has already drawn some conclusions. "Twenty years ago everyone believed civilization was driven by ecological forces," Schmidt says. "I think what we are learning is that civilization is a product of the human mind." - Charles C. Mann writes about Göbekli Tepe for National Geographic.
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