Asking for a Superfund designation means relying on the same agency that accidentally sent 3 millions of gallons of orange waste into the Animas River.
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The severance tax will bring in 77 percent less revenue this year -- half of the revenue goes to the Colorado Department of Natural Resources budget.
Mike King navigated contentious fracking debates and sparred with the EPA over the Gold King Mine spill. He’ll join Denver Water as its director of planning.
Silverton resisted a Superfund designation for decades. It just took a bright orange river to change things.
The five Colorado mines include Colowyo, Bowie No. 2, Foidel Creek, Deserado and West Elk.
Will the the bottom drop out for coal in 2016, or will the slow decline continue?
The nature photographer says he was motivated by activism to raft the Yampa River for his latest book.
As lawmakers start the 2016 session, Colorado's governor lays out his biggest priorities, and faces questions about promises made last year.
Colorado is among states where lawmakers have talked about transferring federal lands over to local government control.
Environmental groups have found success in challenging federal coal leases. They hope to further that success in Colorado this year.
- Renewable energy is only one of the steps toward achieving the goals set by the Paris climate deal. We take a trip around North America to explore other ways of keeping carbon out of the atmosphere.Read More
Colorado researchers are studying a disease that's led some parts of Central America to be called "Land of the Widows."
About 75 people across the state work in remote areas keeping a watchful eye on the state’s water supply.
With a Paris climate agreement just over a week old, President Obama is singling out the GOP on climate change in an interview with NPR.