Researchers find shark teeth made of natural fluoride

(Phys.org) -- German researchers studying shark teeth have found at least two species that have fluorinated calcium phosphate - mineral fluoroapatite, as a main component, one of the main ingredients in toothpaste, which ...

Ongoing evolution among modern humans

(PhysOrg.com) -- It has long been the common perception that once modern humans appeared more than 50,000 years ago, little has changed in human biology.

page 1 from 5