Some Plaque To Build A Theory On: Did Humans And Neanderthals Kiss?
NPR's Scott Simon reflects on the scientific discovery of Neanderthal dental plaque that indicates they might have kissed humans.
dental plaque
Does Flossing Help Or Not? The Evidence Is Mixed At Best
Since 1979, the federal government has urged daily flossing. But the recommendation was removed recently from U.S. dietary guidelines after health advisers found the evidence of benefits to be weak.
This Dirty Little Weed May Have Cleaned Up Ancient Teeth
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."