Heat has long threatened migrants crossing the Arizona desert. Now, amid the hottest years on record, it is putting missions ...

News has exclusive video of the fight that led to a fatal shooting on the University of Arizona campus late Sunday.

Surgeons at Chicago's Northwestern Medicine gave Mandy Wilk, a cancer patient, a first-of-its-kind double lung transplant.

Maricopa County inspectors visited about 750 restaurants along with other food-serving facilities and found 8 violations.