They're now allowed to roam only in Eastern Arizona, southwest New Mexico.
Fourteen bighorn sheep were released into the Catalina Mountains this morning.
Household water use data is not public information in Arizona
The far-northeast-side tract uses triple the citywide average water use.
Regional temperatures expected to increase, experts say.
Park is the first state park in Arizona to receive the designation.
Oracle State Park has been granted International Dark Skies status. Take a look at the park over several years.
Small businesses and curb cuts will be eligible by July.
But the 600 who have received them aren't actually using less water.
Its collar resembles those on endangered gray wolves, says Fish and Wildlife Service.
Wildlife officials plan capture and release in late November.
Land-use agreements will protect vital wildlife corridors from development.
City aquifer called stable, but some worry more problems lurk in future.
Part 1: Recycled bottles help rebuild reservation, one man's life
Toxic heavy metals may have leached into the water during heavy rains.
After 25 years running Trees for Tucson, Joan Lionetti honored with oak.
Federal regulations will cut sulfur dioxide emissions 85 percent at the smelters.
Official with Mexican environmental agency explains why authorities couldn't stop spill and how they'll hold the company accountable.
Opponents wonder if Hudbay is seeking to expand the proposed mine.
Environmentalists cite a population drop of more than 90 percent.
Existing forecasts "critically underestimate" risks in Southwest, new study says.
Wildlife service supervisor changed his staff's findings, records show.
A sea turtle chose a welcoming, posh beachfront, but the wrong month.
Possible ramifications loom for Rosemont Mine, Fort Huachuca.
Critics say any mitigation deal could help the mine win approval.