Severe drought is shrinking the places many Western animals depend on for food, water and shelter, and the effects may be strongest for predators, according to new research.

People living near oil refineries can often see or smell signs of industrial pollution. Now, a new interactive map aims to help them better understand the potential health impacts associated with those facilities.

The Roadless Rule has been in place for decades. Lawmakers are divided.

States that use the Colorado River say they want to avoid litigation about its future, but are unable to agree on a plan to share water.

After a record-breaking month of visitors in May, the national park could see a historic summer of tourism. Twenty percent more tourists visited Yellowstone than in May of 2021, which kicked off the busiest year on record with more than 4.8 million visitors.

Boaters found 41-year-old Brandon Rhea of Denver floating in the water on the northwest shore of the lake.

Experts say risk is low, but fatal ungulate disease is a ‘new and emerging problem.’

Colorado's negotiator, Becky Mitchell, and Nevada's, John Entsminger, spoke to a crowd of policy experts and answered questions from the audience.

More than 80 places in the Mountain West have been certified by the nonprofit DarkSky. The designation requires steps to reduce light pollution. But it also allows communities to market themselves as stargazing destinations.

The agency is asking anyone with relevant tips to reach out to its field office in Cody.