The Trump administration is returning to 2012 emission rules, which it says have cut mercury pollution by 90%. Environmentalists say that’s not enough.

The Arizona Department of Water Resources is gearing up for a legal fight over Colorado River negotiations and has hired a law firm to represent the state.

Jay Weiner, the water attorney for the Fort Yuma Quechan Indian Tribe on the Colorado River in Arizona and California, discusses how tribes play a role in Colorado River governance, even if they’re not officially in the closed-door negotiations.

The historic heat wave that hit the western U.S. last week was made at least five times more likely due to climate change. Scientists say it would have been “virtually impossible” in a world without human-caused greenhouse gas emissions.

Aspen Highlands’ updated master plan submitted to the U.S. Forest Service includes a gondola to the top of Cloud Nine and an expansion of summer operations. When those projects might take shape isn’t clear.

heat-related illness as temperatures rise

Hot days and polluted air may be doing more than making people uncomfortable — they could also affect mental health. A new study from the University of Utah finds that short bursts of extreme heat, combined with certain types of air pollution, are linked to an increased risk of suicide.

Record-low snowpack across the Upper Colorado River Basin will likely translate to poor conditions for spring runoff, and could mean emergency action to supplement low water levels in Lake Powell.

Staffers from Rep. Mike Kennedy’s (R-Utah) office spoke with Emery County’s Public Lands Board during their monthly meeting, and said the lawmaker was having discussions related to Bears Ears National Monument, to “roll back the size of the monument and, and shrink it down.”

Local, regional and state wildfire leaders are concerned about increased fire danger this summer as the Western Slope experiences its worst snowpack in over 40 years. But those agencies across the Roaring Fork Valley and the state are collaborating on fire mitigation and wildfire preparedness ahead of what is expected to be an extremely dry summer.