A renowned home in northern Arizona and a castle that sits on South Mountain were listed as two of the nation's most endangered historic places.

Nearly one week after a magnitude 5.4 earthquake shook the Borderland, experts are revealing what may have caused it.

Resolution Copper could get Oak Flat as early as June 16, but the Becket Fund remains hopeful that the U.S. Supreme Court ...

A new study showed that most major U.S. cities are sinking, which could cause major issues down the line. Is Phoenix sinking? Here's what to know.

A city has experienced back-to-back earthquakes. The region sits on top of an ancient fault line that formed 30 million years ...