DENVER — Researchers at the University of Colorado have discovered a 10,000-year-old hunting weapon they say had been preserved in ice before being melted out by rising temperatures.
Researchers find ancient tool in melting ice near Yellowstone
Tuesday, June 29, 2010 | 5:11 p.m. CDT;
updated 6:33 a.m. CDT, Wednesday, June 30, 2010
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