The University of Arizona is co-leading a new study showing that X and Y chromosomes play a much larger role in our health than previously thought.

Marana police are investigating a possible road rage incident that left one person seriously hurt. The incident happened this ...

As part of our Searching 4 Solutions series, News 4 Tucson is tackling the pothole problem frustrating drivers across the ...

Old Tucson's Nightfall wrapped up its opening night, kicking off the 34th year of the annual Halloween event with redesigned ...

The News 4 Tucson Investigators were the first to tell you about the death of Nicholas Quets, and now the Senate has passed ...

The intersection of Kolb and Tanque Verde roads is closed to northbound and eastbound traffic due to a rollover crash.

The public has until late October to weigh in on U.S. Customs and Border Protection's plan to build 62 miles of border ...

Commuters should prepare for upcoming overnight lane closures on a local roadway. According to the Town of Marana, Borderland ...

A beloved southside park is set to welcome the community back after an $8 million transformation that includes a splash pad, ...

Southern Arizona law enforcement agencies are receiving more than $3.3 million in federal funding to bolster criminal justice ...

Your biological sex chromosomes may play a much larger role in how your body fights off deadly diseases and ages than ...

Arizona residents and businesses can now access thousands of dollars in rebates and tax credits designed to lower energy ...