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In Ancient Ore. Dump, Clues To The First Americans?

02:23
Displayed in the hand of University of Oregon archaeologist Dennis Jenkins are three bases for western stemmed projectiles from the Paisley Caves in Oregon. The bases date to some 13,000 years ago. (Science/AAAS)
Displayed in the hand of University of Oregon archaeologist Dennis Jenkins are three bases for western stemmed projectiles from the Paisley Caves in Oregon. The bases date to some 13,000 years ago. (Science/AAAS)

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