New modeling of carbon cycle shows unsteady but habitable history before liquid water disappeared New models from recent ...

It puts all your knowledge to the test,' said local contestant. 'Not only knowledge, it also puts you to the test – ...

That’s the magic of Buckskin Mountain State Park in Parker, Arizona – a place that transforms ordinary day trips into the kind of memories you’ll be bragging about for years. Palm trees and mountain ...

Dust and groundwater contaminated with heavy metals and radioactive chemicals pose a health threat that the authorities have ...

The saguaro cactus is the iconic plant of the Arizona borderlands, and in June and early July, its fruit ripens. For the Tohono O’odham Nation, harvest time ...

Hidden among the majestic canyons of the Utah desert, about 7 miles from the nearest town, is a small research facility meant ...

Big Bend Ranch State Park in Terlingua stands as Texas’ largest state park, a 311,000-acre haven of rugged wilderness that ...

It puts all your knowledge to the test,' said local contestant. 'Not only knowledge, it also puts you to the test – ...

In the driest region of the world’s driest inhabited continent, a vast inland lake that is typically dry is slowly filling ...

A new Tucson Water initiative will help pay for Tucson businesses and apartment complexes to switch out grass for more eco-friendly desert landscaping. The new rebate program is part of a new $1.8 ...