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.

It sets out the terms on which you submit content to ... on some of the Reach Group’s websites, including the Daily Mirror website, that provides an option for reviewing this website and the ...

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