The state began its shift away from coal nearly a decade ago with the Clean Air, Clean Jobs act.
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The EPA says it won't release public comments on its interim cleanup plan for mines in southwest Colorado, until a full plan is released.
Colorado Parks and Wildlife officials have fishing restrictions in nearly a half dozen rivers across the state.
Wildfires in California have killed at least eight people and destroyed more than a thousand homes.
Dense and smoky skies are expected to continue through Tuesday. Some evacuations orders were lifted in the Silver Creek Fire.
A gun range shuttered following the start of the Lake Christine Fire is reopening. The range where the fire began, remains closed.
Wyoming sees wind flow generally different than that of the western plains, where many of Colorado's existing farms are built.
Incident meteorologists go into fire zones with crews to forecast weather for firefighters.
Travel in groups, remove bird feeders and foundations, and keep your house cats and pet dogs indoors.
A vital reservoir on the Colorado River will be able to meet the demands of Mexico and the U.S. Southwest for the next 13 months.
Snow packs, reservoirs and aquifers around the state are running dry.
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.
Extremely low water levels has forced the city of Aspen to declare a stage 2 water shortage for the first time in history.
Some governors in the U.S. West say a new Trump administration directive threatens to undermine a hard-won compromise aimed at saving a beleaguered bird scattered across their region.