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U.S. Environmental Protection Agency

The best energy expenditure is negative

The best energy expenditure is negative

Last summer, the reality of air pollution in Maryland finally got through to me. This realization came not in an asthma clinic or downwind of a coal-fired power plant, but in my quiet suburban garden. One sunny afternoon, I noticed that the leaves of my green beans were covered with small bronze lesions that I didn't recognize as the signature of any common insect or disease. With Google's help, I found my beans were suffering from ozone damage. Ozone damage? Sure, I knew about air pollution in Baltimore/D.C. and ozone action days, but isn't bad air mostly an urban problem? Surely the air is OK in my yard, miles west of Baltimore. But there it was, visible proof that the...

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