The small fish are expected to thrive inside Biosphere 2 and establish a new, local population, according to researchers.

Prioritizing which animals and plants to help is driven mostly by whether we like them or not. Some experts say that may not ...

Rapid development in the Valley is displacing burrowing owls from their native agricultural habitats, leading to a decline in ...

One brave condor was greeted by sunny skies and a cheering crowd Sept. 27 after spreading its wings and taking its first flight over Vermilion Cliffs National Monument. Meanwhile, four ...

The International Union for Conservation of Nature (IUCN) has announced that several species of animals and plants have now ...

A critically endangered rhino made its public debut Friday at a Cleveland zoo, dashing about its enclosure and giving a boost ...

Some biologists worry about the impact burros could have on Arizona's desert ecosystem from eating larger plants relied upon ...

Two California condors hatched and raised at the Oregon Zoo’s Jonsson Center for Wildlife Conservation are now soaring ...

Enter solar-powered light buoys. A team from Arizona State University recently worked with coastal gillnet fishers in Mexico ...

Environmentalists worry about pollinating species in the pivotal desert borderland as more tall barriers are planned by the U ...

A recent study from the Arizona Game and Fish Department found that an invasive species of burros is threatening the Sonoran ...

Colorado’s collared gray wolves have continued spreading across the Western Slope, with more movement toward southern parts ...