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

During a hike in the Great Smoky Mountains National Park in 1995, Don Barger climbed Chilhowee Mountain hoping to gaze across the valley below. All he saw was a wall of gray haze.

The average visual range has increased from 90 miles to 120 miles in some western parks and from 50 to 70 miles in some eastern parks, according to the Harvard program. Trump’s EPA administrator ...

During a hike in the Great Smoky Mountains National Park in 1995, Don Barger climbed Chilhowee Mountain hoping to gaze across the valley below. All he saw was a wall of gray haze. Today, he said ...

Two federal properties in North Dakota are subject to the rule, the Lostwood National Wildlife Refuge and Theodore Roosevelt National Park. The AP analysis found both sites have seen dramatic ...

Harvard and Penn’s presidents resigned ... They are being asked to protect their students. As Theodore Roosevelt said: “In any moment of decision, the best thing you can do is the right ...