"Wildlife advocates plan to challenge the approval of a new Yellowstone River dam aimed at benefiting Montana and North Dakota farmers that critics say could kill off a dwindling population of a fish species dating to the time of dinosaurs."

"The Public Utilities Commission of Nevada (PUCN) has voted to restore favorable rates for residential solar customers in NV Energy’s Sierra Pacific Power Company’s service territory -- exactly one year after the commission passed a controversial fee increase that brought the state’s residential solar market to a halt."

"President Barack Obama designated two national monuments Wednesday at sites in Utah and Nevada that have become key flashpoints over use of public land in the U.S. West, marking the administration's latest move to protect environmentally sensitive areas in its final days."

"The Colorado Parks and Wildlife Commission has approved a plan to kill some mountain lions and black bears. It's part of a plan the commission hopes will decrease the number of predators to help boost the state's mule deer population."

"U.S. wildlife managers at Yellowstone National Park are reporting an unusually high number of grizzly bear deaths, 55, linked to humans this year in a trend believed tied to a growing number of the bruins harming livestock or challenging hunters over freshly killed game."

"Federal officials on Monday moved to block new mining claims at the doorstep of Yellowstone National Park, the latest push by the Obama administration to protect environmentally sensitive areas during the president’s final months in office."