Gov. Jared Polis’ office told state lawmakers Wednesday that Colorado must immediately move to open a new prison to handle projected growth...

The Colorado Rockies didn’t make a ton of offseason acquisitions in the leadup to the 2026 season. But they did fundamentally reshape their...

Colorado on Wednesday reported its 12th measles case of the year, in a Weld County adult who was hospitalized but has since been released....

Doug Vilsack, who has headed the Bureau of Land Management in Colorado since 2022, is resigning after declining a transfer and new role. ...

Aside from a significant loss to the Pittsburgh Penguins, Scott Wedgewood won five consecutive games and has performed well against tough op...

Colorado lawmakers rejected a bill Tuesday that would have required state and local police to intervene when federal immigration agents use...

Colorado sued the U.S. Department of Energy in federal court Wednesday for using emergency orders to keep the Craig Unit 1 coal power plant...

Vegetation draws on groundwater during dry summers, leaving less water for the river and, ultimately, people.

Casey Barrett’s tidy, two-story home on a Westminster cul-de-sac hums with the constant drone of an oxygen pump.“Most of the equipment I...

The Environmental Protection Agency has slapped back six oil and gas air pollution permits to Colorado regulators, saying the state failed t...

Colorado Democrats’ gatherings over the past two weekends to help pick which candidates will be on the party’s primary ballot in June were b...

A committee formed by Gov. Jared Polis to come up with a framework for tweaking a state law regulating “consequential” decision making by ar...

Colorado voters will be asked in November whether the state should prohibit transgender kids from participating in gendered sports that do n...

Tuesday marks the start of a heat wave in Colorado, and many parts of the southwestern U.S., that forecasters say could bring record-high te...

Colorado investigators are still searching for information into the decades-old killing of a girl who was kidnapped from her school and late...