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This morning, we dive into the latest 'State of the Air' report from the Lung Association, revealing how Colorado measures up ...

Several Denver metro counties celebrated Earth Day with air quality wins, with Boulder and Adams counties adopting new air ...

The move will give state regulators more time to develop a plan to improve air quality in metro Denver and the region, and to see whether recent strategies to reduce harmful emissions will work ...

Energy Secretary Chris Wright celebrated the 56th anniversary of Earth Day by contrasting how the environment looked before ...

I just spotted what might be the next-generation Nissan Leaf, and trust me, this isn’t the quirky little EV you remember. Is ...

Almost half of everyone who lives in the United States breathes unhealthy levels of air pollution, according to the American ...

Holly Energy Partners has taken the unusual step to request a public hearing on its project before the Colorado Air Quality Control Commission.

Like labels on cigarettes, opponents say fossil fuel warnings could change attitudes. Others call it gasoline “shaming.” ...