EPA calls for haze-reduction at Western coal plants

Washington Post : The Western Regional Air Partnership and other environmental groups have succeeded in getting the Environmental Protection Agency to enforce provisions of the Clean Air Act in the Western US. Provided a deal struck between the EPA and the groups passes a judicial review, coal-fired plants in Colorado, Montana, North Dakota, and Wyoming will be required to install devices called scrubbers to reduce their emissions of sulfur dioxide and nitrogen dioxides—or be shut down. Besides being a source of atmospheric pollution, the emissions are responsible for reducing visibility at the Grand Canyon and other national parks.