"A toxic solvent still widely used by dry cleaners across Washoe County could be banned within 14 years under plans proposed by health officials."

"The Department of the Interior has frozen oil and gas development on 60 of 77 contested drilling sites in Utah, saying the process of leasing the land was rushed and badly flawed."

"An incinerator that burns hazardous material from Utah and around the West is facing more than $500,000 in penalties for environmental violations."

"Developers of a controversial coal-fired power plant in Sevier County [Utah] now intend to transport and dispose of the proposed facility's fly ash in Carbon County and Tooele County landfills rather than close to home."

"BILLINGS, Mont. -- Facing the combined pressures of climate change, hunters and lax protections, 600 grizzly bears in and around Yellowstone National Park are going back on the threatened species list under a federal court order issued Monday."

"Even as Idaho has sold more than 14,000 wolf-hunting permits, the first 10 days of the first legal wolf hunt here in decades have yielded only three reported legal kills."

"With four gray wolves having been killed in Idaho since Sept. 1, a federal judge has cleared the way for legal hunting of the once-endangered predators to proceed."

"The American West is losing its autumn colors as global warming begins to bite and there is far more at stake than iconic scenery."

"PAVILLION, Wyo. ... residents outside this small rural, farming community blame their water woes -- and what they perceive to be the unusual health problems in their midst -- on hydraulic fracturing, or 'fracking,' a common technique used in drilling new oil and gas wells."

"Wolf hunting season opened Tuesday in the state of Idaho."

A rare chance for people to walk through the mile-long tunnel that gives entrance to Zion National Park was part of the park's centennial celebration.

"Federal environment officials investigating drinking water contamination near the ranching town of Pavillion, Wyo., have found that at least three water wells contain a chemical used in the natural gas drilling process of hydraulic fracturing."

"Researchers found that two of the Tetons' biggest glaciers have lost more than 20 percent of their surface area since the late 1960s."

Some residents are worried about a rural Nevada dump where decades of toxic refuse lie buried in shallow trenches.

In the Yaak Valley of Montana, environmentalists have been talking to loggers, snowmobilers and other longtime opponents of wilderness protection about the future of public lands. Rick Bass writes of his involvement in a cooperative effort that could lead to the first wilderness-area designation in the state in a quarter-century.