Where do you draw the line on national park boundaries? They long have been political creatures, with no regard to traditional wildlife corridors, viewsheds or, in some cases, common sense.
Preliminary numbers show rising interest in snowcoach tours of Yellowstone National Park in winter and slightly declining interest in snowmobile tours.
There's a section of Yellowstone National Park not too far south of the park's West Entrance where access is tricky no matter what the season. But in winter, when the snow is deep, rogue snowmobilers find their way into the park to play.
During 2006, 11 homicides were investigated across the national park system. Two involved women who had been pushed off cliffs, one was a suicide, and one was the victim of a DUI accident.
Perhaps objections to park entrance fees would be muted if the parks once again handed out distinctive decals to visitors as they entered the park. This picture, taken in 1922, shows how this proud park visitor decided to display her collection.
If a wolf turns up in Rocky Mountain National Park, it will be protected by the Endangered Species Act. But plans by the Bush administration to remove ESA protection from Yellowstone's wolves could make it incredibly hard for the predators to migrate down to Colorado.
This Saturday, in West Yellowstone, Montana, members of the Buffalo Field Campaign rallied outside of Yellowstone National Park's West Entrance to call attention to and protest the ongoing hazing and killing of Yellowstone bison by the National Park Service and Montana's Department of Livestock.