From Alaska to Arizona, tribes are confronting the possibility of stalled projects, energy outages and economic disruption.

A handful of Democrats are seeking to fill his shoes in the 7th Congressional District, while a trio of Republicans is vying ...

Arizona’s extreme environment is reshaping how big cats hunt, and it’s not like anywhere else on Earth. From stalking ...

President Donald Trump touted malice for Democrats like Sens. Kelly and Gallego and Reps. Stanton & Ansari and all who didn't vote for him.

State policymakers and health experts worry the cuts will drive up uncompensated care and force hospitals to cut services or ...

This photo gallery, curated by AP photo editors, features photos of the aftermath of flooding in central Texas.

The venture, privately funded to start, is now run by the University of Arizona. And today, scientists there are quietly ...

After decades of fighting, advocates for those who faced radiation exposure in Arizona and elsewhere are getting a big win ...

Taiwan Semiconductor Manufacturing Company (TSMC) denies reports of delaying a Japanese plant to prioritize U.S. investments.

The party’s leftward shift in the Biden administration arguably laid the groundwork for President Trump’s aggressive approach ...