Among the dead are a 17-year-old high school senior at Highland High School in Ault.

An analysis of federal data shows a 41% rise nationally in emergency room visits due to extreme heat incidents last year. It’s hitting vulnerable Americans the hardest.

Flagstaff, Ariz,. became the first ever DarkSky Community in 2001. Central Idaho is home to the only DarkSky Reserve in the U.S. and Utah has the highest concentration of DarkSky places globally. More towns in Colorado want to join the ranks.

Fewer regulations could speed up the process of getting stations in the ground.

A new study finds that human emissions are the main culprit behind the decades-long drought that ebbs and flows across the Western U.S. Scientists warn the drier pattern could become the new normal, with major implications for water supplies.

The Colorado Department of Corrections said the evacuation of the Rifle Correctional Center was made out an "abundance of caution" to keep incarcerated individuals safe from the Lee Fire.

A new study led by the University of Michigan shows that large livestock farms are polluting the air across the U.S., including parts of the Mountain West. Researchers say these impacts are felt hardest by nearby communities, where people of color often live.

The Radiation Exposure Compensation Act was expanded in July so more people can seek help. But some are sounding the alarm over scammers trying to charge big fees.

Tourists are expected to hit the road in the months ahead as Route 66 turns 100 years old.

Hotel and rental bookings are up slightly compared to last summer according to data from 17 western destinations, including Vail, Colo., Sun Valley, Idaho, and Jackson Hole, Wyo.

The EPA is trying to rescind the "endangerment finding," which Arizona, Colorado and New Mexico officials say helps protect humans and the environment from unhealthy emissions.

They say extreme heat and other climate impacts should be considered in monetary policy-making.