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Scientists Discover 400,000-Year-Old Tartar on Cavemen Teeth

  • Jul 27, 2015
  • 1 min read

Fascinating. Even cavemen had to deal with a form of pollution, apparently!

http://www.nbcnews.com/science/weird-science/tartar-found-400-000-year-old-teeth-n377196


 
 
 

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