400,000-year-old teeth reveal their contents

A 400,000-year-old set of teeth, discovered in Qesem cave outside of Tel Aviv, has revealed minute traces of food, charcoal and possibly the remains of a rudimentary toothbrush in the teeth’s plaque.

http://www.timesofisrael.com/400000-year-old-teeth-reveal-paleolithic-pollution/

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