DNA taken from ancient European skeletons reveals that the genetic makeup of Europe mysteriously transformed about 4,500 years ago, new research suggests. Here, a skeleton, not used in the study, but ... more 
DNA taken from ancient European skeletons reveals that the genetic makeup of Europe mysteriously transformed about 4,500 years ago, new research suggests. Here, a skeleton, not used in the study, but from the same time period, that was excavate less 
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LiveScience.com | Photo By Göran Burenhult
Tue, Apr 23, 2013 11:30 AM EDT