Arizona Public Service (APS), Salt River Project (SRP), and Tucson Electric Power (TEP)—have announced plans to explore the ...

Geologists examine a massive fissure in Arizona and find that may have existed way before it caught public attention.

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

Jumping off Robert F. Kennedy Jr.'s "Make America Healthy Again" campaign, Arizona Republicans are supporting House Bill 2164 ...

A Valley fever vaccine for animals may be available by the end of the year. Dr. John Galgiani, founder of the Valley Fever Center for Excellence at the University of Arizona, says they discovered a ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

Tucson's new ‘Astro Trail' is a collection of national parks, state parks, observatories, and planetariums, that offer a ...

The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the ...

NASA’s OSIRIS-REx mission delivered samples from asteroid Bennu, revealing crucial molecules linked to life, including amino acids and nucleobases found in DNA and RNA. The presence of ammonia and ...

The desert city in southern Arizona is a sanctuary for stargazers—and now it's even easier for visitors to explore.

Coachella Valley Unified School District is expected to propose further reductions in force to the board on Feb. 6 to address ...

Food giant Nestle unveiled a $675 million Glendale plant that makes creamers for coffees, a segment where the company expects ...