US Geological Survey geologists estimated large potential for—and large uncertainty about—the amount of hydrogen ...

According to the Arizona Burn Center, temperatures in the 90s are hot enough to heat concrete, asphalt, and water.

Maricopa County is introducing the Emergency Zones tool, an interactive map that provides critical information to residents ...

Fire officials across the region have already been hard at work preparing for if and when they are called to action.

Arizona's water agency has proposed cuts in water use across the Willcox basin, goals residents said are impossible to meet.

The contaminated groundwater in a central Phoenix block of land was recently cleared up after over 25 years, according to state officials.

Tree ring research show prolonged dry periods are normal in Arizona, but the current drought, in its third decade, is one of the worst in 1,200 years or more. The lack of snowpack could raise risks of ...

Arizona holds a lot of world records, but one title feels especially on the nose — the sunniest city in the world. Yuma takes that title, according to Guinness World Records. The Guinness World ...

It’s no secret that Arizona has been in long-term drought status for years. But how does this one compare historically?

Arizona is carrying out its first execution in years Wednesday, after a pause because of botched lethal injections, transparency issues and difficulty securing the necessary drugs. The state plans ...