The Treaty of Guadalupe Hidalgo ends the Mexican-American War, giving the U.S. ownership of 55% of Mexico’s territory. 1850: ...

The fuel provider has extended its brand licensing program to retailers in Arizona, Colorado, New Mexico, Nevada and Utah.

The Rocky Mountain states say they don't have water to give. The Southwest says it can't save the Colorado River on its own.

States that use the Colorado River say they don't want to go to the Supreme Court, but some are quietly preparing for ...

The Trump administration's hiring freeze could leave Arizona "woefully unprepared" for fire season, Sen. Mark Kelly, D-Ariz., ...

UNC and Montana split their two conference games with each team winning on the road. UNC’s other conference loss came Jan. 23 ...

Colorado’s cannabis industry is evolving with the legalization of marijuana in neighboring states and the adoption of CBD in ...

Utah and the Navajo Nation have finalized a landmark water rights agreement that will deliver key water needs to the Navajo ...

Winning lottery numbers are sponsored by Jackpocket, the official digital lottery courier of the USA TODAY Network. Where can ...

A new chapter in Washington's history may unfold within the next few years as a bill to establish a committee for redesigning ...

Lead negotiators from the Colorado River’s Upper Basin states expressed a dual sense of uncertainty and urgency on Tuesday, ...