They tested oak, desert willow, hackberry and ironwood trees. Brent Blum, director of the Southern Arizona Experiment ...

Almost a quarter of a century after he first travelled the iconic Route 66 by Harley-Davidson, Geoff Hill revisits the ...

At the University of Arizona's Agriculture Center, there are 80 tree saplings that are all being used for this research.

The plan will involve planting up to 27,000 new trees and constructing 550 shade structures over the next few years. Phoenix ...

The Tonto National Forest is working with Apache tribes to restore Emory oak groves, blending tradition with modern methods.

If you cut down a tree, you can read an environmental record. Now climate change is complicating the narrative.

Arizona went red. The pivotal swing state ended up not being so pivotal, after all — or, at least, not nearly as pivotal as it was in the 2020 election. Though results are still being tabulated ...

Donald Trump won Arizona on Saturday, returning the state and its 11 electoral votes to the Republican column after Joe Biden's 2020 victory. Related video above: Trump begins transition as Biden ...

And while Democrat Ruben Gallego is likely to win the U.S. Senate seat, Republicans had strong showings further down the ballot, clinching every Arizona Corporation Commission seat and most of the ...

Nothing is official yet, but prospects look dim for Arizona Democrats’ hopes of flipping the Legislature. Plan B — to knot up the state Senate in a 15-15 tie — is also looking like a distant ...

The new plan includes a $60 million funding commitment and focuses on tree equity, which means planting trees in the areas ...

WASHINGTON (AP) — The Associated Press declared President-elect Donald Trump the winner in Arizona on Saturday night after vote updates in Maricopa and other counties added to his overall lead ...