A Colorado company has landed a $12.1 million contract to build a visitor and research center at Mesa Verde National Park, which long has needed a suitable building to house its millions of artifacts.

Add the National Parks Conservation Association to the number of organizations and developers offering a phone app to help you negotiate the national parks. A big difference here, though, is NPCA is giving its app away for free. Another is its emphasis on park wildlife and nature in general.

Two rangers from Glen Canyon National Recreation Area were killed in a plane crash, Park Service officials said Saturday.

There's no question the stunningly blue water inside the caldera at Crater Lake National Park is a vital park resource, so when scientists began wondering some years ago if the water was becoming less transparent—and why—researchers went to work.