Ancient toolmakers discovered fire treatment (AP)
AP - Maybe it was an accident or perhaps an ancient experiment. Many thousands of years ago, early humans somehow figured out they could make better stone tools by treating the rocks with fire. Evidence of that, dating 72,000 years ago, has been found on the southeastern tip of Africa, researchers report in Friday's edition of the journal Science.
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Posted in: on Saturday, August 29, 2009 at at 8:26 PM
