The Grand Canyon State sues over Trump administration rules that would sharply reduce the amount of water Arizona receives from the river.

An appeals court hearing could determine whether feds reconsider Endangered Species Act protections for wolves across the West.

And climate change’s fingerprints are all over it. The water year started off on a rainy note, especially in the San Juan ...

Finding a four-leaf clover feels like a moment of improbable luck; having a dog is a long, sustained luck you don’t recognize until you realize how extraordinary the ordinary days have been.

A trailer parked near the border of Bureau of Land Management and National Forest lands north of Nucla, Colorado. Credit: Luna Anna Archey Colorado’s vote next month on whether to amend the state ...

Her husband spent years working in Carbon County’s namesake coal mines. In this pocket of central Utah, energy and the ...

Wildfires across the West have renewed concerns over the fate of water quality in the aftermath. Fire retardants used to slow the spread of a blaze add to the worries.

Some populations of scarlet monkeyflowers can evolve fast enough to save themselves from climate change-induced drought. This is the first time researchers have documented evolutionary “self-rescue” ...

Sixty cats were found on an abandoned 40-foot sailboat anchored off Point Defiance Park in Tacoma, Washington. “It started out as a welfare check,” Officer Shelbie Boyd told KUOW. The Tacoma Police ...

Armed Border Patrol agents raided a protest camp in Lochiel, in southeast Arizona, making way for contractors to cut down the last standing cottonwood tree Monday morning for a double border wall, ...