Winter weather from a major coast-to-coast storm closed a major interstate and other state highways in northern Arizona on Friday morning.

All those caterpillars on the bougainvillea are actually bird food, and they are here now to provide necessary protein for ...

Once again, the data collected on the recovering Mexican wolf population show progress.” -- Stewart Liley, chief of wildlife ...

Arizona lawmakers want more solar energy projects in western areas of the state, a goal that could get mixed support from the White House.

The 56th Annual Fourth Avenue Spring Street Fair is set to return to Tucson from March 21-23, offering a lively weekend ...