Tucson parishioners agree with Pope Francis on the environment.
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UA biologist to talk about interactions that lead to complex organisms.
An endangered Mount Graham red squirrel.
The federal government formally announced Friday that it will restart reviews of the proposed Rosemont Mine’s impacts on eight endangered spec…
The "ocean" inside the enclosed environment outside Oracle will be drained and rearranged to accommodate ocean species from the Gulf of California.
Vertebrates would have to evolve 10,000 times faster than they ever have to keep up with the pace of change predicted for their climatic niche…
The proposed Rosemont Mine has gained a preliminary thumbs-up from the U.S. Fish and Wlidlife Service, with a new draft biological opinion say…
Conservation groups have sued to restore endangered status protection for small owls found in southern Arizona.
The saguaro cactus - a tall, handsome, enduring symbol of the Sonoran Desert - is proving to be an upwardly mobile species. In terms of elevation, that is.
This saguaro grows under an oak tree "nurse plant" in a woodland area at 4,500 feet - well above the typical altitude for saguaros.
Those chicks, bunnies and other Easter pets that delight your child can suffer a sad fate if they're not cared for when the season is over. Animals released into the wild can get sick, be hit by cars or be attacked by predators, say animal shelter and humane society officials.