This alert has expired. See below for our latest information on strengthening clean air protections for national parks:Strengthening Clean Air Protections for Parks
Air pollution is among the most serious threats facing national parks, affecting visitor health, compromising scenic vistas and altering the climate. A proposed revision to the rule intended to restore national park air could diminish these threats. Air pollution discolors and warps horizons at our parks while cutting miles and miles off of scenic views. Read More.