American Rivers came out there other day with its top 10 list of endangered rivers, and No. 1 was the Upper Delaware, which flows through the Upper Delaware Scenic and Recreational River. No. 3 also falls in the National Park System, the Gauley River around which the Gauley River National Recreation Area rises up from.

There were great expectations when Mote Marine Laboratory launched an underwater robot nicknamed Waldo to look for oil and dispersants in the Gulf of Mexico just west of Dry Tortugas National Park.

Searchers so far have been unable to find any sign of a 25-year-old Oklahoma man thought to be missing somewhere in the northern range of Yellowstone National Park, officials said Friday.

They're inventorying trees at Mount Rushmore National Memorial, with an eye out for trees that are infested with mountain pine beetles.