A historic South Mountain castle and a northern Arizona home are among the nation’s most endangered historic places.

There is no shortage of spectacular natural features dotted around the Grand Canyon State, and you can add this scenic trail ...

The Stronghold Fire southeast of Tucson is at 69% containment on May 3, while officials anticipated hot, windy conditions for ...

The endangered Mount Graham red squirrel was classified as endangered in 1987, with population numbers ranging from 35 to 550 ...