Officials at Grand Canyon National Park have implemented water conservation measures because of a broken section of the ...

Exceptionally preserved Cambrian fossils uncovered in the Grand Canyon show how evolution accelerated in resource-rich waters. An extraordinary cache of remarkably well-preserved ancient animals, ...

There are more than a dozen castles in Arizona, some with rather unique histories or designs. Here's where they are and how to visit them.

Late on Aug. 4, the Kirkland Fire was mapped at 923 acres, the same figure as the day before, and was 40% contained, according to Tiffany Davila, spokesperson for the Arizona Department of Forestry ...