The E.P.A.’s report follows a growing body of research that has found that sludge can be contaminated with human-made ...
This fertilizer's effectiveness lies in its carefully ... This scientific insight underscores the importance of nurturing the ...
The fertilizer industry says more than 2 million ... “The chances that serious adverse effects will occur from a complex and unpredictable mixture of tens of thousands of chemical pollutants ...
That sewage was being used as fertilizer on farmland nationwide ... “These are highly complex mixtures of chemicals,” said David Lewis, a former E.P.A. microbiologist who in the late 1990s ...