Copy into your RSS Reader
Copy into your Podcast App
This young male, buried at a prehistoric site in Central Sudan, probably munched on the roots of a plant called purple nutsedge.
Donatella Usai/Centro Studi Sudanesi and Sub-Sahariani
July 16, 2014 Turns out that for 7,000 years, snacking on nutsedge may have helped people avoid tooth decay. But at some point, the root it lost its charm. By the 1970s, it was branded "the world's worst weed."
<iframe src="http://www.npr.org/player/embed/331677512/332050511" width="100%" height="290" frameborder="0" scrolling="no">
This skull may have better teeth than you.
February 24, 2013 By examining ancient dental plaque, researchers have concluded that prehistoric humans' diets made for healthier mouths. The addition of flour and sugar to modern diets may have set the stage for a near-constant state of oral disease.
NPR thanks our sponsors
Become an NPR sponsor