Colorado has expanded its air pollution-fighting arsenal to an entirely new theater after years of preparation, taking on so-called air toxi...

When Dr. Jacci Bainbridge, a professor of pharmacy and a researcher at the University of Colorado Anschutz, goes to work on a clinical trial...

The Colorado Sun is a nonpartisan news organization, and the opinions of columnists and editorial writers do not reflect the opinions of the...

Authorities found bodies piled throughout the bug-infested Penrose building in various states of decomposition

Earlier this month, the Colorado State Senate’s Committee on Business, Labor, and Technology voted to advance Senate Bill 90. The bill would...

A massive and valuable energy resource is sleeping deep underneath the ground in many parts of Colorado: geothermal heat. It often lives...

Firefighters continue to battle high winds and dry air as they work to contain a wildfire burning south of Colorado Springs, which grew to 4...

Colorado lawmakers with less than a month of regular session left are set to debate a bill named after a growing movement against the Trump...

David Wilcock’s death follows an explosion of conspiracy theories about an alleged string of deaths of people tied to sensitive research

Will Alex Laferriere score for the Los Angeles Kings versus the Colorado Avalanche in Game 3 of the NHL Playoffs First Round, on Thursday a...

A wind-driven wildfire southeast of Colorado Springs rapidly grew to 4,000 square acres Wednesday evening, prompting an evacuation order. ...

A state Senate committee is recommending that two of three appointees to the Colorado Parks and Wildlife Commission be removed while one rec...

A Colorado prosecutor said Wednesday that an immigration officer has been charged with third-degree assault and criminal mischief following...

The regional executive director of a Colorado nonprofit that sticks up for foster kids in court pocketed $99,000 through a scheme that used...

A rare fire weather warning has been issued by the National Weather Service, warning both rural and urban residents in south central and sou...