EPA tells Polis there’s no getting out of selling reformulated gas to fight ozone

State has threatened to sue over pricier, cleaner gasoline

Colorado attorney general vows to protect abortion access, gun laws

Phil Weiser calls U.S. Supreme Court term ‘adventuresome,’ ‘aggressive’ and ‘destabilizing’

After U.S. Supreme Court decision, some Colorado leaders see urgency in addressing climate change

Federal, state action needed to implement policies

Could prescribed burns curb the health impacts of wildfires?

Controlled fire seen as a tool to mitigate some of the harm, report says

Smoke, dust darken Durango skies

Fires burning in Arizona linked to Monday’s haze in Southwest Colorado

Scientists protect their homes from wildfire smoke, poor air quality

Preventive measures can limit impacts on health

Hamburger helper: Beef fat may be coming to help fuel a fancy jet near you

Tallow-based fuel is advertised to cut carbon output of jet flights by 25%

New rules to curb oil and gas emissions across Colorado

More stringent leak detection, pollution regulations will help state meet air quality, climate change goals

Colorado governor, Democrats reach deal on emissions proposal

Environmental groups cheer changes, while business and energy sectors cry foul

Colorado asks EPA to lower state’s air rating

Businesses say added regulation would be harmful

Colorado exemption allows industry to pollute without permit

DENVER – Colorado public health officials routinely allow oil and gas companies to begin drilling and fracking without obtaining federally required permits that limit the amount of pollution...

New Mexico utility seeks electricity options other than coal

ALBUQUERQUE – New Mexico’s largest electric provider on Monday put out a request for proposals for hundreds of megawatts of power to fill a future void as the utility plans ahead for weaning...