There is a thread of commonality in the Colorado River as it flows through the Grand Canyon, and the Potomac River as it flows into Washington, D.C. It revolves around preservation.

Last week we wondered how many folks were using their smartphones as cameras in the national parks. Let's stay with the smartphone theme this week: Do you have a national park app on your phone, and do you use it?

Rocky Mountain National Park remained closed for a fifth day Tuesday as crews worked to assess the damage in the wake of last week's torrential rain storms.

So habituated to human visitors are mountain goats at Glacier National Park that they can seem as docile and innocent as sheep. To better understand exactly how habituated mountain goats have become to human invasions, the park and the University of Montana are studying how the goats are affected by people, trails, and roads in the Logan Pass area.