The closure comes after an autonomous Uber vehicle struck and killed a pedestrian in Tempe in March, and stems from an internal safety assessment the company took on following the incident.

The nation's strictest rules on the use of abortion medication will continue to be blocked while a lawsuit against them plays out in court.

Homeland Security Secretary Janet Napolitano was approved Thursday as the first female president of the 10-campus University of California system and is expected to begin the job in September.

Homeland Security Secretary Janet Napolitano was scheduled to be formally introduced Thursday to the 26 people who are expected to become her new bosses ai??i?? members of the University of California's governing board.

Dr. George Goodfellow with his horse, a gift from Mexico’s President Porfirio Diaz.

A poll of Arizona lawmakers showed solid agreement on one of the most important issues of the week: Who would take home the National Football League title.

Create 75,000 jobs that increase average wages by 30 percent. Deliver high-speed broadband Internet throughout the state. Thin 30,000 additional acres of land annually to prevent forest fires. Increase health care coverage and fund the Common Core Standards.

A public watchdog group on Wednesday gave Phoenix a grade of D for its online disclosure of spending information, ranking it 19th among the 30 largest cities in the U.S.

The federal government is proposing new limits for pollution from a coal-fired power plant on the Navajo Nation that it says will improve visibility at places like the Grand Canyon, but it could come with a price tag of more than $1 billion, according to the plant's owners.

A federal appeals court is considering a request by the self-proclaimed "toughest sheriff in America" to reverse a lower-court decision barring his deputies from detaining people based solely on the suspicion that they're illegal immigrants.