The state began its shift away from coal nearly a decade ago with the Clean Air, Clean Jobs act.
Colorado Parks and Wildlife officials have fishing restrictions in nearly a half dozen rivers across the state.
Researchers say they need more data to understand the relationship between climate change and hailstorms.
The record for the biggest hailstorm price tag in Colorado is $2 billion.
Mark Serreze details his research trips in the Arctic and his change of heart in his new book, "Brave New Arctic."
A new CU Boulder study reveals more similarities than differences in how the parties view climate change issues.
A lack of rain and snow set up the perfect conditions for wildfires and intense drought.
The Environmental Defense Fund believes most of the emissions come from leaks in storage tanks.
Fort Collins author Todd Mitchell sees a trend of young fiction books that combine realistic environmental problems with “narratives of hope and agency.”
Investigators said they were unable to determine if anything illegal occurred because the agency leaders did not document their rationale for the reassignments.