Article: Water quality watchdogs.

When Congress passed the Clean Water Act in 1972, the goal was to force industries to reduce the flow of pollution into the nation's waterways. Thirty years later, new applications of the law are raising questions. For instance, what happens if the pipe from which the pollution flows is up in the air, attached to a helicopter?

In early October, forest activists in Oregon and Washington won a major victory in that argument. Hoping to halt aerial pesticide spraying designed to kill the native tussock moth, which attacks evergreens (including Christmas trees), activists pointed out that the U.S. Forest Service plan crossed several waterways. If the pesticide--toxic ...

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