A new report, "Air Quality Concerns Related to Snowmobile Usage," says snowmobiles produce nearly all the air pollution in Yellowstone National Park.
The Park Service says that a new Las Vegas airport, planned for a site 10 miles from California's Mojave National Preserve, will ruin the "solace and quiet" of the desert.
A time line gives high points in the history of the Antiquities Act, which since 1906 has been used to designate many national parks and monuments.
Superintendent Jerry Meredith has a management plan for Utah's new Grand Staircase-Escalante Nat'l Monument, the first park to be managed by BLM rather than Park Service, and many environmentalists and some locals praise the job he's doing.
Interior Secretary Bruce Babbitt would like to see a national monument for the Arizona Strip, a little-known region of the Shivwits Plateau northwest of the Grand Canyon.
The Park Service has completed a new General Management Plan that will guide resource management in Glacier National Park for the next few decades.
In Utah, off-road vehicle recreation is exploding on the public lands, and beleaguered BLM officials are having trouble keeping up.
Student Conservation Association interns may volunteer to work in the nation's parks through the AmeriCorps program.
In his own words, Dave Simon, Southwest Regional director of the National Parks and Conservation Association, criticizes what the Park Service has done in Petroglyph.
In his own words, Albuquerque's Open Space Division director Matthew Schmader discusses the problem of vandalism in the park, and how to prevent it.
A Park Service team conducted an "oversight review" of Petroglyph National Monument that cited "communication and morale" as big problems for employees.
In her own words, Petroglyph National Monument Supervisor Judith Cordova defends her record on the job.
New Mexico's Petroglyph National Monument is threatened by problems that include the runaway growth of the neighboring city of Albuquerque, disagreements over how to manage the resource, and a controversial, embattled superintendent, Judith Cordova.
Locals and environmentalists are concerned about development plans for a 400-acre resort right next to Mount Rainier National Park and the little town of Ashford, Wash.
A new sport called sandboarding is becoming popular in Park Service wilderness areas with dunes, and some worry that it is a form of recreation "not compatible with wilderness values."
The Conservation Fund is working with local ranchers to remove cattle from Nevada's Great Basin National Park.
A revival of interest in explorers Lewis and Clark raises questions about how to handle increased tourism on the National Historic Trail through Montana - as well as questions about how the history should be told.
In his new collection, "Fur and Loafing in Yosemite," cartoonist Phil Frank hilariously follows the adventures of dysfunctional rangers, tourists and bears in Yosemite National Park.