Botanist Gustaf Starck rallied people passionate about preserving desert plants with a sign outside his Scottsdale ranch.

Cassidy Araiza for The New York Times Supported by By John Liu and Jack Healy Reporting from Phoenix After Helen Wang finishes work at the new microchip plant looming over the Arizona desert ...

Explore the rugged terrain and rare plants at one of Arizona's newest and barely visited national monuments, a serene cactus ...

It's beginning to look a lot like Christmas at the Waterman Restoration Site on the western edge of Avra Valley, where ...

Conservation groups say the proposed Arizona routes for an Interstate 11 project failed to consider habitat for imperiled ...

Mexican long-nosed bats have been identified in southeastern Arizona through citizen scientist efforts and innovative DNA ...

Although I’ve lived in Phoenix, Arizona for twenty years of my life, there are still times I wonder why on earth someone ...

Our work in 2024 has changed laws and held public officials accountable. Here's what to know about The Arizona Republic's ...

A deep freeze has some green-thumbed enthusiasts worried their plants will freeze over but Valley nurseries are providing tips to protect one of Arizona's prized Five C's.

Across the Arizona-Sonora Desert Museum's 98 acres, you'll find 230 animal species – including hummingbirds, coyotes and string rays – along with 1,200 local plant species. Next to the ...