Environment

While the Navajo Nation heavily relies upon coal revenue, activists argue the trade-offs aren’t worth it — namely risks to groundwater and even the uprooting of some long-time Navajo families and burials.

Microplastic concentrations in Nevada's Truckee River increased nearly tenfold during spring runoff, according to new research that offers a glimpse into how plastic pollution moves through some western waterways.

Activists have spent the last 70 days camped around and inside a cottonwood tree right along the border in the tiny town of Lochiel. The tree was the last of an old grove estimated to be up to 250 years old.

Hunters and hikers were among almost 133,000 people opposing potential changes to the Travel Management Rule in national forests. Snowmobile groups were in the minority.

On Wednesday, the U.S. Senate unanimously passed a measure out of its upper chamber that would transform the Chiricahua National Monument into the Grand Canyon State’s newest national park.

Back in March, the U.S. Forest Service transferred ownership of more than 2,400 acres to Resolution Copper — following a 2-1 ruling by a panel of 9th Circuit judges that legally cleared the way for the land exchange to be finalized.

The partner organizations were planning conservation or cultural resource projects in parks across the Mountain West.

Arizona is still working on a deal with California and Nevada to spread out the pain of cutbacks, but they are still figuring out which cities and farms will use less water.

The investment was welcomed by groups that advocate for the protection of wild horses and have been pushing the government to abandon helicopter roundups.

A new study from the University of Washington found that snow measurement tools can produce very different estimates for water availability.