lunedì 18 agosto 2014

NYT Science: Now a Weed, Once a Prehistoric Cavity Fighter

Now a Weed, Once a Prehistoric Cavity Fighter
By RANJODH SINGH

The remarkably healthy teeth of prehistoric humans in Africa have high levels of compounds found in purple nutsedge, which may have helped ward off cavities.

Published: August 19, 2014 at 4:00AM

via NYT Science http://ift.tt/1sQetyM