Conservationists want to protect an elusive animal’s habitat. Snowmobilers want to preserve a cherished pastime.
One brief encounter with a big cat motivated a search for others.
The system that connects many of the state’s rural communities may soon shut down.
In one Colorado county, solar-energy-training classes are helping ease the transition from fossil fuels to renewables.
Electric fences and bear-resistant garbage cans are helping humans in Montana adjust to the new normal.
Has the National Park Service gone too far to protect the endangered Devils Hole pupfish?
Cows have to be stunned before slaughter. Why doesn’t our finned fare?
In Imperial Beach, a dramatic solution to coastal flooding
On one Instagram-famous Colorado peak, five people were killed in six weeks.
An explorer who searched for ways to avoid Aedes Aegypti may have hastened its spread.
“Crisis living rooms" offer breathing exercises and talk therapy to mental-health patients in an effort to curb emergency-room visits.
The agency is forging ahead despite slashed budgets and outdated policies.