Despite all the warnings passed out by Yellowstone National Park officials and rangers, from time to time visitors looking for that perfect photograph overlook the fact that the park's bison not only are wild, but can be highly temperamental. A California man discovered that in a most painful way Wednesday when looking for a close-up and the bison he was focusing on decided he wanted no part of a photo shoot.

A Denver businessman has been chosen to take over as chief executive officer of the National Park Foundation, the congressionally chartered fund-raising arm for the National Park System.

If you like it hot in canyon country, then there's a hot deal on the table for a room at Zion National Park during the high heat of summer.

Building summer heat and declining moisture are combining to produce dangerous fire conditions in Grand Teton National Park and the adjacent Bridger-Teton National Forest. The potential for wildfires has been bumped up to "high" in those two preserves.