The Center for Biological Diversity has petitioned the U.S. Fish and Wildlife Service to safeguard the Mule Mountains ...

The Center for Biological Diversity petitioned the U.S. Fish and Wildlife Service today to protect the Mule Mountains population of the Yarrow’s spiny lizard under the Endangered Species Act.

"They're not there," he said. "It seems like the species is now extinct." Yarrow's spiny lizards may be extinct in the Mule Mountains of Arizona after living there for 3 million years. / Credit: ...

To travel into the past, you only have to drive a little more than 200 miles southeast of Phoenix, Arizona, to a former mining town in the Mule Mountains. Bisbee was once the largest city in Arizona, ...

Thanksgiving weekend is perfect for hitting the open road and exploring Arizona's incredible landscapes. From towering red ...