The Forest Service restricts some of the access off-road vehicles have to Idaho's Targhee National Forest.
The Park Service plans to restrict cars in Grand Canyon, Zion and Yosemite national parks, replacing them with light rail and buses.
Conservationists are unhappy about development company Jeld Wen Inc.'s proposal to build an "ecologically sensitive" ski resort at Pelican Butte in Oregon's Cascade Mountains.
Activists seek to protect Yellowstone's bison from another slaughter by physically shepherding wandering bison back onto protected land.
We are fools to throw away, for a snowmobile's adrenaline rush, the chance to really get close to nature, the writer believes.
Some say the Park Service is overreacting in closing some areas of Mount Rainier National Park to visitors to protect them from possible mudslides.
Some say the National Park Service needs to start charging fees for all the filming that is done in the nation's parks and national monuments.