An $850 million loan for KORE Power's huge Arizona factory was not finalized when the company called it quits.

Arizona's three largest electric utilities will jointly explore expanded nuclear-power options. A new plant here could be ...

More than 1 million people could pour into western Maricopa County in the coming decades – if housing developers can secure ...

Arizona has some of the prettiest sunsets, but why? There's a science behind it. Here's what to know, including sunset times ...