Ten states elect their public utility commissions, which make big decisions about energy. This November, the stakes are high, especially in Arizona and Louisiana.

Aside from states voting on marijuana, Massachusetts voters will have the chance to vote on the legalization of psychedelics on Tuesday, Nov. 5.

Taiwan Semiconductor Manufacturing Co. has achieved early production yields at its first plant in Arizona that surpass ...

Tucson and other desert cities benefit more from the cooling effects of trees than other urban areas do, according to new study by the U.S. Geological Survey.