Case Study: Organ Pipe Cactus National Monument Organ Pipe Cactus National Monument was created in 1937 to protect its namesake plant and a scenic, biologically rich portion of the Sonoran Desert. The ...

This section of the Sonoran Desert near the border between Arizona and Mexico features massive cacti ... Security is waiving the following laws to build proposed sections of border wall in Arizona and ...

Casa Grande Ruins National Monument located in Arizona preserves Hohokam Culture and ruins of the largest prehistoric st ...

This time, anyway. Thomas Hulen, executive director of Friends of the Sonoran Desert National Monument, was one of seven environmentalists who signed a November 21 letter to the U.S. Bureau of ...