In response to a lawsuit from conservation groups, the Federal Highway Administration and Arizona Department of ...

Casa Grande Ruins National Monument located in Arizona preserves Hohokam Culture ... explorers as long ago as the 17th century. Built by Sonoran desert people who have come to be called the ...

The Chuckwalla National Monument will protect public lands in southeastern California and will extend a conservation corridor stretching into Utah.

Sonoran Desert National Monument is located south of Goodyear and Buckeye and east of Gila Bend, Arizona. Created by Presidential proclamation on January 17, 2001, the monument is managed by the U ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive ...

The Coalition’s mission is to protect the biodiversity of the Sonoran Desert in southern Arizona through science-based advocacy ... protection and preservation of the Ironwood Forest National Monument ...