Pima County is proposing new regulations to manage truck traffic on unpaved roads near the proposed Copper World mine.

A new report that ranks states based on climate-related risks and how they impact human health has some not-so-great news for Arizona. The data from the Commonwealth Fund ranks Arizona 45th in the ...

After biking through the higher-elevation forests, Republic reporter Joan Meiners finds a different Arizona Trail below the ...

As we walked the trail back to his car, he bent to touch a soft tuft of blue grama grass, a drought-resistant native. It’s ...

Experts say the Colorado River shows no sign of recovery. The Republic asked water providers how they would survive shortages ...

Meritas Health’s renewable energy and combined heat and power microgrid will power the hospital during grid outages and is ...

While there is a bigger carbon footprint in the very short term because of the manufacturing process in creating the batteries for electric vehicles, very quickly you come out ahead in CO2 emissions ...

A small experiment at the University of Arizona recently led to a major discovery that could change the way we build cities and fight climate change. During a materials test, researchers accidentally ...

For Arizonans contending with the notorious desert heat, Savers provides another significant advantage – a climate-controlled environment for extended browsing sessions. When summer temperatures climb ...

Arizona wanted to get back on the right track after an underwhelming first season under Brent Brennan where the team finished 4-8 and missed a bowl game despite preseason high expectations. Well, ...

Arizona center Tobe Awaka did not go participate in most of the Wildcats' pregame warmups and is not expected to play in the Wildcats' exhibition game against Saint Mary's on Saturday at McKale.

Arizona Senate President Warren Petersen is urging the University of Arizona to take advantage of an opportunity from President Donald Trump’s administration to be one of nine initial signatories of ...