Spotting a Mojave Desert tortoise is increasingly difficult in the American Southwest. The tortoises, with their unmistakable domed patterned shells, live in California, parts of Nevada, Arizona and ...

Spotting a Mojave Desert tortoise is increasingly difficult in the American Southwest. The tortoises, with their unmistakable domed patterned shells, live in California, parts of Nevada, Arizona and ...

TUCSON, Ariz. - Federal officials have concluded that Sonoran desert tortoises native to Arizona have a relatively stable population that doesn’t need protection from environmental threats, but ...

Millions of acres of the Mojave Desert, home to five military bases and at least 40 protected species, including the desert tortoise and Joshua trees, will have more protection thanks to a designation ...

A federal judge has partly ruled in favor of environmental groups challenging what one called a vast "spaghetti" network of popular off-road vehicle routes in the Mojave Desert, which they charge are ...