Person's Origin Revealed by Traces of Lead in Teeth

Trace amounts of lead in modern and historical human teeth can give clues about where they came from, says a new study. According to the study led by University of Florida geology researcher George D. Kamenov, if an unidentified decomposed body is found, testing the lead in the teeth could immediately help focus the investigation on a certain geographic area, which would help law enforcement to avoid wasting resources checking for missing persons in the wrong places. ...