Colorado went from the hottest September on record to the fourth coldest October on record in 2019.

The county’s moratorium on oil and gas development expires March 2020.

Whether it was policy from the state legislature or cheap solar and wind prices, the Centennial State saw dramatic changes.

Out-of-control dogs were the most heavily ticketed item by rangers along the Front Range's popular outdoor recreation spots.

Utilities are parting ways with fossil fuel-heavy power providers in pursuit of cheaper electricity bills and more renewable energy.

Colorado is both leading — and lagging — when it comes to air monitoring for methane.

No. 1: If you care about climate change, you should care about methane.

A CPR News investigation found that the state’s air methane monitoring system is ill-equipped to verify their success story.

Get that fancy puffer coat you've been eyeing for a cheaper price secondhand.

Two rural Colorado energy cooperatives want state regulators to step in over disagreements they have with power provider Tri-State Generation and Transmission.

Tending to a below-ground fire is unlike fighting ones above ground.

Updated 4:40 p.m. National Transportation Safety Board investigators have released their summary of what went wrong on April 17, 2017, when an explosion linked to an oil and gas well in Weld County killed two people and injured one.

Colorado’s long-awaited and newly released 380-page report on the health impacts of oil and gas operations confirmed what many Colorado residents who live near the sites have suspected for years: State public health researchers found that emissions near drilling and hydraulic fracturing sites can cause negative health impacts.

The fire, including the original prescribed burn, covers about 620 acres.

Last year, its emissions grew and it spend millions on energy efficiency.

Colorado’s population has grown 14 percent since 2010, and many of the transplants are in pursuit of the state’s breathtaking views and trails.