Scientists drug-test whole cities

An accurate and privacy respecting method to drug test a large population.  Maybe now they can stop the stupid war on drugs because they have *accurate info*.

Researchers have figured out how to give an entire community a drug test using just a teaspoon of wastewater from a city’s sewer plant.

The test wouldn’t be used to finger any single person as a drug user. But it would help federal law enforcement and other agencies track the spread of dangerous drugs, like methamphetamines, across the country.