The National Park Service will launch a dazzling 850,000 fireworks in the nation's capital this year. Officials acknowledge the potential health risks.

© Andrew Harnik/AP

President Donald Trump pardoned a mechanic who disabled pollution control monitors on hundreds of diesel trucks. Now others are lobbying for similar clemency.

© Julia Demaree/AP

"EPA is not the party that is negotiating and or mediating or refereeing that deal," the EPA administrator said.

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There might just be a simple reason the EPA administrator is more secure in his job than his Cabinet colleagues: He’s good at doing what Trump wants.

© Evan Vucci/AP

EPA has chucked the long-standing finding that greenhouse gas emissions drive climate change, drawing promises of lawsuits from environmentalists and Democrats.

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© Anna Moneymaker/Getty Images

With its plans to revoke the endangerment finding, the administration is gambling that the Supreme Court will allow it to completely avoid regulating the nation’s top greenhouse gas sources.

© Jose Luis Magana/AP