A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

Afternoon temperatures across southeast Arizona will be 15 to 20 degrees above normal over the next several days, with the Tucson Metro Area likely ... Largest-ever map of space reveals we might ...

A Japanese IT service and consulting company shelled out $300 million for 174 acres in southeast Mesa slated for a technology ...

"It will take all of us to put Arizona on the map as a space hub ... in Arizona including RTX Corp., formerly Raytheon, in Tucson along with Honeywell, Northrup Grumman and Boeing around metro Phoenix ...

"It will take all of us to put Arizona on the map as a space hub ... formerly Raytheon, in Tucson along with Honeywell, Northrup Grumman and Boeing around metro Phoenix. All four are included ...

Metro Phoenix has teetered in and out of compliance ... The Maricopa County Air Quality Department maintains a status map showing air quality information collected by its ground-level monitors ...

The EPA's decision on the Valley's ozone nonattainment issue could have big impacts on public health and the local economy. Here's what to know.

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...

The Tucson metro area added 3,000 jobs in November 2024, representing a 0.7% rise. That accounted for roughly 5% of the state’s overall job growth. Despite the slower employment gains ...

A wave of scorching temperatures and dangerously dry conditions is fueling a "critical" fire risk across the Southwest.

FEMA has released preliminary flood maps for several areas in Cochise County, including Benson, Bisbee, Sierra Vista, ...