A Tucson environmental group and a Patagonia community group filed suit Tuesday to try to force the EPA to take a stand on an air quality permit for a major ...

The filing was born out of the 1996 passage of the Navajo-Hopi Land Dispute Settlement Act, which ratified an agreement ...

The Bureau of Reclamation will pay $86.7 million toward Tucson's new water treatment plant, which will stretch the city's ...

A judge has dismissed a lawsuit by environmentalists that would have made the San Pedro River a state-regulated Active ...

Rivers are vital lifelines that uphold both human civilization and the natural world. Water from rivers nourishes our crops, ...

Despite the term not being the most appealing, most Valley cities are currently using this method as a way to expand their ...

Despite the term not being the most appealing, most Valley cities are currently using this method as a way to expand their ...

Researchers have discovered an underground aquifer in Oregon's Cascade Range is significantly larger than previously thought ...

Oregon's Cascade Range mountains might not hold gold, but they store another precious resource in abundance: water.Scientists ...

Hoo-boy! Talk about information overload. There are so many things going on right now. Where to start? I think I’ll start ...