USA Today: Health & Science

By Traci Watson

For as long as the dog has been mans best friend, dog waste has posed a menace to mans nose and foot. Now science has revealed a more unsavory truth: Its an environmental pollutant.


In the mid-1990s, scientists perfected methods for tracking the origin of nasty bacteria in streams and seawater. From Clearwater, Fla., to Arlington, Va., to Boise the trail has led straight to the hunched-up dog — and to owners who dont pick up after their pets.


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