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"Scientists at a meeting in Texas said it was likely that a speeding comet hit Earth 65 million years ago and caused the end of the dinosaur era."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2013/03/22/Study-Comet-may-have-killed-dinosaurs/UPI-28271363958117/?rel=4431363974385>