The Idaho Department of Agriculture says it wants to rid the river of invasive mussels for good, which hasn't been done before in a river system.

Lee’s bill amends the Wilderness Act of 1964 to make exceptions for the Department of Homeland Security to conduct immigration enforcement actions. Public lands advocates say it’s an excuse to roll back environmental protections.

Zombie trees may look alive but are in the process of demise weakening them and increasing risks to people and property

Heavy rainfall over a two-day period in the Four Corners region saw severe floods in the Animas and San Juan rivers, causing damages to homes and businesses. Climate researchers are examining historical trends and the impacts of climate change to better understand the massive rain event.

A new data center campus is currently under construction in Elyria-Swansea — a neighborhood already struggling with pollution from major highways and Colorado’s only oil and gas refinery.

A new study shows Nevada’s groundwater — and the ecosystems that rely on it — is under growing strain. Researchers have mapped out solutions that could help and serve as a guide for other Mountain West states.

A new report finds that rising temperatures are making droughts across the Mountain West and Southwest even worse — and longer-lasting.

Rural electric co-ops on the Western Slope and the Four Corners region are partnering with bigger utilities on renewable energy, even as the Trump administration signals its preference for fossil fuels.

Every two and a half miles of barbed wire is responsible for killing one deer, elk or pronghorn a year, one study estimated.

The National Park Service said most roads and trails are open, but most buildings are closed. Some are confused about what they’ll find when they arrive at any given park site.