Water and wind offer powerful symbols on the Arizona Trail, where thirsty hikers have to hunt harder and windmills stand ...

A series of storms drenched Arizona in late September and early October and helped ease short-term drought conditions.

AZ(Land) is working to protect Arizona communities from the impact of climate and inequity through environmental justice ...

Democrats joined the Sierra Club at a Yuma park on the Colorado River to press for climate action as water shortage threat grows.

In 2012, Arizona recorded 156 heat-related deaths across the state. A decade and a nearly three-degree increase in average July temperatures in its largest city later, the death count had swelled to ...

The Western Gateway pipeline will deliver up to 200,000 barrels of gas a day, but environmental groups raise new concerns.

PHOENIX (KPNX) — If you feel like allergy season never seems to end, you’re not imagining it. Across the U.S., and right here in Arizona, climate change is making pollen problems worse — and ...

A study led by University of Arizona researchers shows that decades of groundwater pumping by humans has depleted Tucson-area ...

Producing and manufacturing electric vehicles and their batteries uses a lot of energy, leading many to be skeptical about ...