The EPA is installing a barrier at the mine outside Silverton to prevent another spill like the one in 2015 that sent 3 million gallons of toxic water into rivers.
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Saving African wild cats, elephants and other species from extinction takes serious police work. That's where the National Wildlife Property Repository comes in.
Millions of people rely on crops and cattle that feed off the aquifer. As streams dry up, conservation becomes key.
Colorado's oil and gas regulators have released an outline of possible new standards for designing, testing and permanently shutting down flow lines.
Scientists say the ozone hole over Antarctica is no longer growing, the expectation is that it will take decades to recover.
About 6.3 billion dead trees are still standing in 11 Western states, up from 5.8 billion five years ago, according to U.S. Forest Service statistics.
Nationally, 35 percent of everything Americans throw away ends up somewhere other than a landfill. In Colorado that figure is 19 percent.
In a new book, journalist Michael Kodas explores recent megafires in Colorado and what can be done to change the U.S. relationship with fire.
The plan calls for closing two older units at the Comanche Generating Station — one in 2022 and one in 2025. A third, newer unit would keep operating.
Three decades ago black-footed ferrets were almost extinct. Now, a captive breeding program in Northern Colorado is showing promise.
Secretary Zinke has mentioned public-private partnerships for campgrounds multiple times, including with reporters and at a Recreational Vehicle Industry Association meeting.
While founder Pat Craig hopes to expand, he also wants to be out of business one day — part of a world where there are no more lions, tigers and bears that need to be saved.
Zinke said unspecified boundary adjustments for some monuments will be included in the recommendations he planned to give President Donald Trump.
The moves four months after investigators linked an improperly abandoned oil and gas flowline to a home explosion that killed two people and injured one in Firestone.
The Forest Service's new proposed plan for Hanging Lake includes shuttle service, fees and a limit of 615 visitors per day.