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Scientists Used Cellphones and Sewage to Pinpoint Neighborhoods With Drug Users

It’s entirely possible to analyze literal shit to estimate drug use patterns of whole cities. In fact, as I’ve reported before, wastewater drug analysis—sampling raw sewage for traces of illicit substances—is common practice in many parts of the world, including Europe, Australia, China, and parts of the United States.

Read full news article on motherboard.vice.com