Wild Earth Guardians alleges the the state's plan violates the Colorado constitution.
Energy & Environment
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The Colowyo Mine will now extract coal in territory to the north in the Collom development.
The president-elect's nomination of former Texas Gov. Rick Perry to lead the U.S. Department of Energy has raised concerns among clean energy advocates.
President Barack Obama pushed for a more forceful approach in areas like climate change and renewables, but the Trump administration could undo much of his work.
The council voted 5-4 to push the vote on Broomfield's proposed moratorium and resume the meeting on Feb. 28.
The state senate's Select Committee on Energy and the Environment was created to respond to President-elect Donald Trump's plans to reverse many of President Obama's policies.
Pitkin County commissioners voted 3-2 to oppose Aspen’s move to renew conditional water rights tied to two potential dams and reservoirs.
A group of ranchers near Kremmling will move forward with an ambitious plan to rehabilitate about 12 miles of the river.
Weld County Commissioners say the Heartland Biogas Project does not have a valid permit to operate.
In 'The Sixth Extinction' author Elizabeth Kolbert illuminates the struggles of species to survive in the face of climate change. It is part of the curriculum for one Colorado classroom.
Weld County Commissioners will wade through potential violations that were submitted by neighbors during a Dec. 19 meeting.
What’s it like when teenagers grapple with some of the biggest issues on the planet in school?
A photographer and a writer clung to narrow ledges, endured thirst and injuries to document the Grand Canyon from one end to another.
Since the 1970s, Billy Barr has measured the snow, weather, and first appearance of animals outside his door. The data has helped scientists show the effects of climate change.
In her new book "The Man Who Thought He Owned Water," Tershia D'Elgin tells the story of her family farm outside Greeley.