The Evolution of Stone Tools Reveals Human Innovation was Worldwide

September 26, 2014 11:37 AM

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Stone tools may be more of a common invention than researchers once thought. Scientists have found that this human technological innovation occurred intermittently throughout the Old World, rather than spreading from a single point, as previously thought.

The findings come after researchers examined thousands of stone artificats that were discovered in Nor Geghi 1, a site preserved between two lava flows dated to 200,000 to 400,000 years ago. Layers of floodplain sediments and an ancient soil found between these two flows contain a wealth of archaeol...

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