Readers share photos of gray bird species that live across America. Learn about the variety of gray colored birds you should ...

Rain comes when water molecules in the atmosphere clump together to form ice crystals or water droplets that are heavy enough to fall to the ground. But what causes that clumping to happen?

The saguaro cactus is the iconic plant of the Arizona borderlands, and in June and early July, its thorn-covered small fruit ...

Two unusual, unrelated and somewhat unsettling discoveries drew law enforcement responses last week in the Flagstaff area.

Cousins Tanisha Tucker Lohse and Maria Francisco set off from their desert camp around dawn on most early summer days, in search of ripe fruit from the towering saguaro cactus, an icon of the ...

For members of the Tohono O’odham Nation, the centuries-old sacred harvest of saguaro fruit from the desert around Tucson is ...

The federal government’s program that gives payments to people sickened by nuclear weapons testing could be reauthorized and ...