Biosphere 2 is a groundbreaking research facility studying climate change and ecosystems inside an enclosed glass structure in the middle of the Sonoran Desert.

This year, Tucson's 100 Acre Wood, near Davis-Monthan Air Force Base, is set to be rebuilt as an improved mountain bike ...

A new 280-mile-long freeway that would go from Nogales to Wickenburg is in a court battle. ADOT and the Federal Highway Administration agreed to re-evaluate the plans.

Saturday's matinee showdown between UH and Arizona pits the Big 12's first- and second-place teams against each other.

Tucson’s known for natural wonders. But for snowbirds after a different side of the Southwest, the dynamic downtown is ...

Dive into Arizona’s hidden ocean of flavors, where unassuming eateries serve up seafood so good, you’ll forget you’re ...

Forget your alarm clock. The real wake-up call is waiting for you in Tucson, where a humble market’s breakfast burritos are ...

Bored troops are standing watch, shelters have emptied from McAllen, Texas, to Tucson, Ariz., and border patrols speed ...

For being a relatively small place, the Old Pueblo has been the setting for a surprising number of popular books.

It’s one of Maricopa’s best-kept secrets, even if it’s a massive half-million acres with three federally protected desert ...

A baby bobcat was pulled from a Tucson chimney in this adorable rescue. Watch how rescuers used salad tongs to save the ...