Meanwhile, the Environmental Protection Agency is revising its regulations on air quality near National Parks. Critics say the agency is giving utility companies a pass that will lead to more coal-fired power plants. They charge that the EPA is ignoring the objections of their own scientists – at a time when one in three National Park sites already have air pollution levels that surpass the agency's own health standards. FSRN's Yanmei Xie has the story from Washington.

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