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Posted by / 29-Feb-2020 23:29

To determine year of birth, the researchers focused on tooth enamel.Adult teeth are formed at known intervals during childhood.

Since then they have been dropping back toward natural levels.Over the past six decades, the amount of radiocarbon in people or their remains depends heavily on when they were born or, more precisely, when their tissues were formed.Forensic anthropologists at The University of Arizona took advantage of this fact in a recent study funded by NIJ.The researchers wanted to find out if they could identify a person's year of birth or year of death using precise measurements of carbon-14 levels in different post-mortem tissues.They measured carbon-14 levels in various tissues from 36 humans whose birth and death dates were known.

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