"Government officials will consider new protections for a small, fanged predator [the fisher] that thrives in old-growth forests of the Northern Rockies over concerns that trapping, habitat loss and poisoning could be harming the animal's population."

"Large numbers of migrating Yellowstone National Park bison are likely to face slaughter for at least the next couple of winters as officials weigh changes to a 15-year-old agreement that drives the practice, the park's superintendent said."

"Wildlife officials have divvied up how many grizzly bears could be killed by hunters in the Yellowstone region of Wyoming, Montana and Idaho as the states seek control of a species shielded from hunting for the past 40 years, according to documents obtained by the Associated Press."

"Nevada should accept a federal plan to add an abandoned copper mine near Yerington to the Superfund National Priority List — a move that would designate it as one of the nation's most polluted sites and bring federal funds to cover 90 percent of the cleanup, U.S. Sen. Harry Reid said."

"Wild bison will be allowed to migrate out of Yellowstone National Park and stay in parts of Montana year-round under a Tuesday move by Gov. Steve Bullock that breaks a longstanding impasse in a wildlife conflict that's dragged on for decades."

"Wildlife advocates reached a tentative agreement with the U.S. government in a legal dispute over an endangered fish in the Yellowstone River along the Montana-North Dakota border."

"Leo Garcia hadn't heard of trichloroethylene about four decades ago when he moved into his red-and-white house just west of Cheyenne."

"CHEYENNE, Wyo. — A federal judge is set to hear the state's request to dismiss a lawsuit filed by groups challenging Wyoming laws enacted this year that restrict data collection on open land."