Hairy Forensics: Isotopes can identify the regions where a person may have lived | Science News

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Hairy Forensics: Isotopes can identify the regions where a person may have lived

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10:14am, February 27, 2008

Judging people by their hair isn't shallow, it's sound science: The proportions of certain chemical isotopes in someone's tresses can help detectives pin down that individual's region of origin and recent movements, a new study suggests. The finding could be particularly useful in identifying the victims of crimes or mass disasters and in poking holes in the alibis of suspected criminals.

Water, made of hydrogen and oxygen, makes up more than half of an adult human's body weight. Via various metabolic processes, some of that water is broken apart and the constituent atoms are incorporated into body tissues

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