Fire departments across Arizona are preparing early for wildfire season, especially in the wake of devastating fires in ...

LOS ANGELES — Representatives of California, Arizona and Nevada are urging the Trump administration to take a different approach in confronting the problems of the water-starved Colorado River.

The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.

History and culture buffs appreciate the Arizona State Museum and the University of Arizona Museum of Art while shoppers enjoy Main Gate Square, a pedestrian-friendly shopping and dining area with ...

Not all Californian coastal areas are moving lower. The Santa Barbara groundwater basin, which has been continuously ...

An Arizona nonprofit is donating stuffed bears and sweaters to children impacted by the L.A. wildfires in hopes of comforting them during this difficult time.

Cusick said selling their California home gave them enough cash for a large down payment on the new place in Arizona. Their monthly mortgage payment is now $1,672, compared to $3,309 in California ...

Gas prices in Arizona are the seventh highest in the United States. Why is gas so expensive? Here's what to know and where ...

Arizona forward Trey Townsend knows first-hand that a low double-digit seed can win a first-round NCAA Tournament game: He ...

Findings from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy could be evolving over time. If ...

Just one nation is encouraging its visitors to the U.S. to keep a closer watch due to potential violence and a different set ...

Firefighters were able to stop a fast-moving brush fire that threatened a neighborhood in far north Scottsdale on Thursday.