Scientist Richard Keigley studies Yellowstone's trees to back up his contention that the park's elk herds are out of control and need regulation.
Maverick ecologist Richard Keigley believes Yellowstone's policy of "natural regulation" is not working and, in fact, is harming the park - especially with the park's elk herds, which he says are overgrazing their ranges.
In Utah, Canyonlands park officials and conservationists are saying that an area slated for oil drilling, Lockhart Basin, which is right outside the park boundaries, should be included in the park and protected.
As Yellowstone National Park celebrates its 125th birthday, it continues to struggle with the surrounding states over wildlife management and other questions.
Environmentalists want to close some backcountry roads near Paonia, Colo., that are increasingly popular with all-terrain vehicles.
The Utah congressional delegation's continued attacks on President Clinton only serve to confuse the real issues raised by the president's declaration of the Grand Staircase-Escalante National Monument.
Book review of Dave Smith's "Backcountry Bear Basics: The Definitive Guide to Avoiding Unpleasant Encounters."
A report by the Greater Yellowstone Coordinating Committee, "Winter Visitor Use Management," discusses the threats to the park brought on by recent, greatly increased winter visitation.
The Forest Service revises its approval of a ski area expansion onto public land in Telluride, Colo.
Across the country, conservationists battle the rapidly growing use of noisy, motorized water "thrillcraft," such as jet skis and power boats.
In separate attacks by mountain lions, a boy in Colorado's Mesa Verde National Park is wounded, and another boy, in Rocky Mountain National Park, is killed.
"Consumer Reports" rates its subscribers' experiences in American national parks and finds many complaints about parking, bad roads and overcrowding.
Utah lawmakers try to push bills thgrough Congress to limit the Antiquities Act and control management of the new Grand Staircase-Escalante Nat'l Monument created with the Antiquities Act.
Vail Associates' plans for night skiing on Colorado's Vail Mountain are withdrawn after locals protest.
After a 25-year battle, developer Fred Kummer gives up his plan for the Adam's Rib Ski Resort in Colorado's Eagle County.
Rosalie Little Thunder was arrested for physically confronting the bison slaughter outside Yellowstone, while other Native Americans, equally concerned, propose to re-establish bison herds on reservation land, using otherwise doomed animals.
After half of Yellowstone's bison were slaughtered in Montana last winter over fears of brucellosis disease, the debate remains unresolved and the killing could easily continue next year.
An elegy for Yellowstone's "geyser guy," Rick Hutchinson, profiles a geologist who loved the park so deeply that his friends still feel his spirit there.
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