Across two continents, officials are confronting the same nightmare scenario: a reservoir so depleted it can no longer move ...

The U.S. government may have to impose a Colorado River management plan on the states, Arizona's water chief said Friday.

Negotiators couldn't strike a deal in Salt Lake City this week. Can 7 governors make peace in time to avoid a court battle?

Attorney General Kris Mayes in a southern Arizona town hall called out Tucson Electric Power's deal with the Project Blue ...

Tucson city leaders unveiled a precautionary plan to monitor, document and take legal action should such federal troops ...

Officials in drought-stricken Arizona are moving to regulate groundwater use on the state's western edge, where wells have ...

Explore Arizona’s Colossal Cave Mountain Park on a guided stroll past bat roosts, outlaw lore, and fossilized flowstone in a ...

Big changes are on the horizon for the thousands of drivers who use Tucson's 22nd Street Bridge daily. The bridge is set to ...

Arizona Gov. Katie Hobbs has suggested there could be "efficiencies'' built into state operations, though she provided no ...

Sen. Janae Shamp is on a mission for 2026. The Arizona legislator said she wants to “make pedophiles’ lives hell” and is not backing off. “There are many different layers to how sex offenders are ...

A new report compiled by the University of Colorado's Colorado River Research Group warns that threats to the river's water supply are now so severe that they pose a significant risk to the water ...

We estimate transitory and permanent import tariff shocks in the United States over the postwar period. We find that transitory tariff increases are neither inflationary nor contractionary, and are ...