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Are you a Righty or Lefty? Ancient Teeth and Tools May Explain the Evolution of Handedness
Thursday, January 12, 2017 8:09
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(Before It's News)
Roughly 90% of humans are right-handed and this is one of the traits that separates us from most other primates who don’t really show any overall preference for left or right handedness.
www.Ancient-Origins.net – Reconstructing the story of humanity’s past