pollution

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Pollution declining in parts of eastern U.S.

December 15, 2006 Controls imposed on coal-burning power plants are making it easier to breathe in Ohio River Valley, a new study says. TAGS: pollution, plant, study, electricity, hybrid car, regulation, researcher, California

Plug in your hybrid, pollute less?

April 28, 2006 Maybe yes, maybe no. A lot depends on where you live and how your electricity gets produced. Photos: A souped-up Prius TAGS: electricity, coal, Toyota Prius, pollution, hybrid car, car

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