The Dirty Secret Over US Parks

Pollution from coal-burning power plants, cars and factories often drifts hundreds of miles causing serious haze problems in otherwise remote and pristine parks and forest areas, a variety of studies have determined in recent years. The study examined haze and visitor statistics at Acadia National Park in Maine; Big Bend National Park in Texas; Grand Canyon National Park in Arizona; Great Smoky Mountains National Park in Tennessee and North Carolina; Indiana Dunes National Lakeshore in Indiana; Mt. Rainier National Park in Washington; and Shenandoah National Park in Virginia. The study can be found at: http://www.cleartheair.org/

Thanks to Chris Steins