Rangers at Denali National Park and Preserve are looking for a Colorado man who was making a solo bid to reach the summit of Mount McKinley.

There may not be any partridges in these pear trees, but they're some of the oldest surviving specimens in the country. They're located in a beautiful setting on an island, where a pig had a starring role in a key event in our nation's history.

The U. S. Geological Survey is applying lessons learned from the recent debacle with Air Force One flying over New York City for a photo op. The scientists will be making some scientific overflights at Grand Canyon National Park for the next six days, and they're doing their best to inform the public in advance.

Two groups of boaters encountered problems recently at separate coastal parks, but the situations had vastly different outcomes. Seven teenagers in North Carolina fared immensely better than a group of adults in Mississippi. Four members of the latter group spent the night in the water and 1 is still missing.