Two U.S. agencies say loggerhead sea turtles need greater protection.
Tensions are high as Native Americans oppose a project that will make snow out of treated sewage for a ski resort on an Arizona mountain they consider sacred. Lawsuits have been filed and protesters have been arrested in an effort to block the project.
Mexican officials will release the animals on a ranch in northeastern Sonora, near the U.S. Mexico border. The Mexican Wolf once roamed much of the Southwest.
A tri-national venture announced plans to build a solar panel manufacturing plant and solar farm in a green tech park near Mexicali.
For the past few decades, land managers have been trying to eradicate the non-native tamarisk bush. Most recently, they turned to another a non-native species – a leaf beetle - which may be causing more problems that it's solving.
Senior officials in the Obama administration pledged their support for renewable energy at the recent National Clean Energy Summit in Las Vegas. But some federal dollars that subsidize the budding industry are running out, and other funds are under threat.
A study by Arizona State University’s Morrison Institute finds that the widespread perception that Phoenix and Tucson are facing a water crisis may be overstated.
The men left behind a campfire they thought had burned out. When they returned, they spotted the smoke and fire, which led to one of the largest wildfires in state history, according to court records.
The U.S. Department of the Interior agreed on a comprehensive settlement with the Environmental Protection Agency to address pollution at schools and public water systems in Indian Country.
There's Cabo San Lucas, the popular tourist destination, and then about 80 miles east there's Cabo Pulmo. That's where scientists from the Scripps Institution of Oceanography discovered the unexpected.