Phoenix is believed to be home to the world's largest colony of rosy-faced lovebirds outside of their native Africa

Long before climate change threatened the very existence of the Colorado River, two women botanists set off with a group of amateur boatmen to record the plants that lived along what was then the most dangerous river in the world

President Joe Biden has visited the building site for an Arizona computer chip plant to emphasize how his policies are fostering job growth in what could be a challenge to the incoming Republican House majority

Democratic Sen. Mark Kelly has won his bid for reelection in the crucial swing state of Arizona

A former University of Arizona graduate student accused of fatally shooting a professor on campus earlier this month has been arraigned on first-degree murder and multiple other charges

Authorities say a former University of Arizona graduate student accused of fatally shooting a professor on campus earlier this month has been indicted on seven felony charges including first-degree murder

A former University of Arizona graduate student arrested in the fatal shooting of a hydrology professor is being held without bond on suspicion of first degree murder and aggravated assault of a second person

A University of Arizona professor who authorities say was fatally shot on campus by a former graduate student was an expert on desert water issues who faculty and former students described as a kind and brilliant colleague