A bizarre video has emerged of a wasp and a tarantula having a deadly wrestling ... "I came across these two giants fighting in a desert wash in Arizona a few hours after a rain while looking ...

TUCSON, Ariz.— Conservation groups sued the Federal Highway Administration today to challenge its approval of Interstate 11, a proposed north-south highway in Arizona that would destroy pristine ...

Located in the heart of the Saguaro-dotted Sonoran Desert, Tucson, Arizona is a vibrant city that ... which are shared with ...

TUCSON, Ariz.— Responding to a formal notice of intent to sue from the Center for Biological Diversity, the U.S. Fish and Wildlife Service today announced that it will grant expanded critical habitat ...