Jun 13 - By Malcolm Ritter, AP Science Writer
For about 20 years, Dr. Michael Klag has used a fertilizer made from Milwaukee municipal sludge on azaleas and yew shrubs at his suburban Baltimore home. And Klag, dean of the Johns Hopkins School of Public Health, says he's never had any question about its safety.

Apr 13 - By Kevin S. Vineys, Associated Press Writer
Every day Larry Slattery goes to work, the Environmental Protection Agency asks him to do the impossible.

Apr 13 - By John Heilprin, Associated Press Writers
Three more lawmakers are seeking investigations of federally funded research in poor, black neighborhoods that resulted in sewage sludge being spread on several families' lawns in attempt to determine whether it could combat lead poisoning in children.

Mar 6 - By John Heilprin, Associated Press Writers
It was a farm idea with a big payoff and supposedly no downside: ridding lakes and rivers of raw sewage and industrial pollution by converting it all into a free, nutrient-rich fertilizer. Then last week, a federal judge ordered the Agriculture Department to compensate a farmer whose land was poisoned by sludge from the waste treatment plant here. His cows had died by the hundreds.
Nov 22 - By Catherine Brahic, New Scientist Writer
Rubber tyres, the kind that lie at the bottom of rivers and at the back of junkyards the world over, could be ideal water filters says an environmental engineer at Penn State university in the US.