At Nevada's Lake Mead, the busiest national recreation area in the country, park rangers try to crack down on the "reckless clueless" misbehavior, often fueled by alcohol and drugs, that has already killed 36 visitors this year.
The deadline for public comments on a plan to manage Yellowstone's wandering bison has been extended to Nov. 2.
In Wyoming, Grand Teton National Park officials and environmentalists are battling airline representatives who want to expand the runway at the Jackson Hole Airport, which is located inside the park.
Some say the "Vision 20/20 National Parks Restoration Act" would only continue the "sweetheart contracting practices" that allow concessionaires to profit without returning much money to the parks.
Environmentalists object to a Forest Service plan to build a new snowmobile bridge across Cougar Creek near the edge of Yellowstone National Park.
A draft plan for Glacier National Park would ban jet skis and air tours while protecting historic lodges and improving roads and visitor services.
Critics blast Yellowstone's draft management plan for bison, which would quarantine, vaccinate and reduce the size of the herd to deal with the threat of brucellosis.
Critics object to Park Service plans to spend user fees on a fancy new welcome center in Grand Teton National Park, rather than on improving existing facilities.
Growing Tucson suburbs invade land on the edgoe of Arizona's Saguaro National Park West, when federal funds for a promised buyout of the land fail to materialize.
Lolo National Forest wants to ban snowmobiles on 140,000 roadless acres of the Bitterroot Crest on the Idaho-Montana border.
There is a continuing controversy about who first climbed Wyoming's Grand Teton - Nathaniel Langford in 1872, or a group of climbers in 1898.
Some object to the Forest Service's plan to build a new town for tourists right outside of Grand Canyon National Park.
"Voices from a Sacred Place: In Defense of Petroglyph National Monument," a book edited by Verne Huser, is reviewed, including excerpts.
Congress is slow to act on the chance to purchase and protect New Mexico's Valles Caldera - also known as the Baca Ranch.
Northern New Mexico's Valles Caldera is for sale, and many think the world's largest extinct volcano ought to become the nation's next national park.
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