Researchers discover what are believed to be the oldest weapons ever found in North America: ancient spear points that are 15,500 years old. The findings pre-date the Clovis culture(11,000-11,500 years old) and raise new questions about the settlement of early peoples on the continent.

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Researchers discover what are believed to be the oldest weapons ever found in North America: ancient spear points that are 15,500 years old. The findings pre-date the Clovis culture(11,000-11,500 years old) and raise new questions about the settlement of early peoples on the continent.