There's nothing earth-shatteringly new in National Geographic Magazine's latest article on the slumbering supervolcano beneath Yellowstone National Park. But that doesn't mean it's not a good read.

Jon Jarvis found himself navigating a tricky path Tuesday during his confirmation hearing as the next director of the National Park Service when questioned about recreational snowmobiling in Yellowstone National Park.

With a new administration in Washington the pendulum on snowmobile use in Yellowstone National Park is swinging back towards fewer machines. Interior Secretary Ken Salazar on Thursday directed the National Park Service to follow a course that could limit recreational snowmobile use in Yellowstone to 318 machines per day for each of the next two winters.

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.