Congress passed a massive tax and spending cuts package Thursday that curbs billions of dollars in spending across clean ...

In 2024, the max temperature in Phoenix sat at or above 100 degrees for approximately 30 percent of the year — and that ...

California and six other states that use water from the Colorado River are nearing a 2026 deadline to come up with new rules for sharing shrinking supplies.

Environmental advocacy groups from throughout the Valley gathered at South Mountain Community College Thursday night to share ...

Websites for the national assessments and the U.S. Global Change Research Program were down Monday and Tuesday.

Wildfires can damage local vegetation and change soil characteristics, making the area more vulnerable to flash floods.

Legally mandated national climate assessments disappeared this week from the federal websites built to display them, making ...

U.S. climate assessment website goes dark as the Trump administration revamps federal climate content, with some scientists ...

Rain comes when water molecules in the atmosphere clump together to form ice crystals or water droplets that are heavy enough to fall to the ground. But what causes that clumping to happen?

The 940-page “One Big Beautiful Bill Act,” as it’s formally titled, has consumed Congress as its shared priority with the ...

DINGMAN: You mentioned obviously the impacts here in Arizona of things like the changes to plant regulations. How much leeway ...