'Lucy' species used stone tools, fossil study says

Scientists say they've found the earliest evidence for the use of stone tools by a human ancestor.  Two ancient animal bones from Ethiopia show signs of butchering by human ancestors, moving back the earliest evidence for the use of stone tools by about 800,000 years, researchers say. Two ancient animal bones from Ethiopia show signs of butchering by human ancestors, moving back the earliest evidence for the use of stone tools by about 800,000 years, researchers say. Stone tool - Human evolution - Lucy - Ethiopia - Human

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