ALBUQUERQUE, N.M. (AP) — U.S. land managers are racing the clock as hotter, drier weather raises the risk of wildfires in the ...

A combination of high winds, dry air and above average temperatures caused a wildfire in the Grand Canyon to rapidly expand and cause major damage.

The latest on the Dragon Bravo and White Sage fires. Plus, the trails, lodges, and campgrounds that are closed to visitors.

Arizona groundwater is a lifeline that sustains cities, tribal communities, farms, and plants and animals. Learn the basics.

Cutting‑edge dating reveals driftwood high in Grand Canyon caves 55,250 years ago when a meteor’s shock wave blocked and ...

I visited the Grand Canyon's North Rim looking for a uniquely Arizona experience. Instead, it taught me what it meant to be an Arizonan.

Shutterstock The Havasupai of Northern Arizona The Havasupai have lived in and around the Grand Canyon for at least 800 years ...

Wildfires can burn and spread differently depending on what vegetation they burn. The two fires in northern Arizona have varied landscapes. Ponderosa pine trees grow near the North Rim of the Grand ...

Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: ...

Lace your hiking boots and hop on these lovely trails. You will explore paths serving waterfalls, local flora and fauna, and ...

To behold the Grand Canyon from above, visitors usually book a helicopter tour or ride a zip line. But at the west rim of the canyon, there’s a third (and equally adrenaline-inducing) option ...

An unusually high number of hikers had to be rescued by helicopter on the Grand Canyon, and a construction site is to blame.