The free event at the west end of El Tiro Road will last from 9 a.m. to 3 p.m. and feature four guest speakers, about a dozen ...

or Gopherus agassizii — are officially a different species from tortoises in Arizona and Mexico, previously called "the Sonoran population of desert tortoises" and newly dubbed Morafka's desert ...

Yet the Desert Botanical Garden is home to thousands of species of cacti, trees and flowers from all around the world. The garden's brightly colored plants sharply contrast the Sonoran Desert's ...