Most visitors who come to national parks expect clean air and clear views.
However, Grand Canyon National Park (NP), Arizona, world-renowned for its breathtakingly iconic views, lies downwind of polluted air from coal-fired power plants in the Four Corners region, nearby mining, and urban and industrial pollutants from Mexico and California.
Air pollutants carried into the park can harm natural and scenic resources such as forests, soils, streams, fish, and visibility.
How is air pollution is affecting Grand Canyon National Park, and what is the National Park Service doing about it? __ Learn more here...