Outdoor enthusiasts are worried about the loss of their favorite vistas as President Donald Trump's administration considers ...

States will have fewer compliance problems with coal-fired power plants and other sources of haze-forming emissions like ...

Decisions by Tyler Hassen, a former oil executive, could have big implications for the department responsible for national ...

marking the biggest improvement among the national parks. The EPA estimates that between 2007 and 2018 the rule has cut 500,000 tons of sulfur dioxide and 300,000 tons of nitrous oxides annually.

An analysis of data from 1999 through 2023 shows 93% of parks and wilderness areas saw improved air quality on clear days.

marking the biggest improvement among the national parks. The EPA estimates that between 2007 and 2018 the rule has cut 500,000 tons of sulfur dioxide and 300,000 tons of nitrous oxides annually.