5. The Great Smoky Mountains
The Great Smoky Mountains, which straddle the border between North Carolina and Tennessee, are the most visited of the national parks, but that could change as a result of all the smoke and smog drifting into the park. Smokestacks and tailpipes produce pollution that is causing a problem in the park.
The Great Smoky Mountains take their name from a fine blue mist visible rising from valleys, but nowadays you are more likely to see a white haze of smog. Federal officials are working to decrease smog overall, and particularly where it obscures the view from national parks. Still, with increasing car traffic, vehicles have been contributing more, not less, to the problem.
Photo Credit: Chip Bennett
Read more: biscayne national park, conservations, glacier national park, great smoky mountains national park, joshua tree national park, lake clark national park, national park service, national parks, preservation
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