The state has 15 years to comply.
Maya L. Kapoor
Why the Endangered Species Act can’t save whitebark pines
Politics, money and climate change threaten one of the West’s iconic trees.
Climate change is unraveling natural cycles in the West
Spring’s early arrival creates more mismatches in ecosystems.
Republicans set their sights on the EPA’s science
The federal agency that regulates our environment may soon have less data to work with.
Nogales has a sewage problem
In the borderlands, members of Congress work to resolve wastewater woes.
The biocrust conundrum
By destroying biocrust communities, climate change may be making arid lands more reflective — which could slow down warming.
A way of unforgetting
Author Lauret Savoy on tracing personal and national history through landscapes.
Raptors in flight
Enduring relationships begin with encounters.
People cause the majority of wildfires
New research finds illegal campfires, cigarette butts and other accidental ignitions have nearly tripled the wildfire season.
Ask a Scientist: Why NOAA matters for the West
CIRES head Waleed Abdalati answers our questions.
Where the wild things swim — again
In a borderlands river, improved water quality allows an endangered fish to return.
Latest: Second male jaguar spotted in Arizona
New draft recovery plan for the Southwest released.
Meet Trump’s Interior, EPA and Energy picks
What we know from the confirmation hearings for Ryan Zinke, Scott Pruitt and Rick Perry.
Latest: Another attempt to open Arctic drilling
The legislation is Sen. Lisa Murkowski’s ninth such try.
Tools for the wannabe Western weather prognosticator
The five best resources for understanding the region’s wacky weather.
With more monuments, Republican backlash mounts
A proposed bill moves to weaken executive power of the Antiquities Act.
How humans nurtured the hated mosquito
Alexander von Humboldt and the spread of Aedes aegypti.