You are what, and where, you drink

sea-maid submitted, created time 6 months 1 day (www.economist.com)

POLICE now have a new test to help catch criminals and verify alibis. By analysing the chemical composition of human hair, researchers can determine the source of the water someone has been drinking in recent months. And that can indicate where he or she has been.

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Your history is printed in your hair

Peterson case warrants seek GPS, 'biological material'

Eric wu submitted, created time 1 year 1 month (edition.cnn.com)

Investigators searching for an ex-police officer's wife are focusing on the Global Positioning System in her husband's vehicle along with "biological material" and other physical evidence, according to a published report.

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