The Exxon Valdez oil spill in Prince William Sound in Alaska; the battle over future oil drilling in the Arctic National Wildlife Refuge in Alaska; oil spills in the Gulf of Mexico near Galveston, Texas; medical waste pollution on the beaches of the northeast; and nuclear contamination from the Department of Energy and Department of Defense facilities have all demonstrated how endangered and fragile America's remaining natural places have become. These ecological controversies make our designated parklands even more precious and reinforce the important responsibility given to the National Park System for preserving America's natural areas.
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