Henry Brean

The 2024 count of Mexican wolves showed at least 286 of the endangered animals living in eastern Arizona and western New Mexico, an increase of 11% since 2023.

State wildlife authorities continue to collect dead coyotes from the Pantano Wash on Tucson's east side, where 32 of the animals have been deliberately poisoned over the past two weeks.

Arizona News: State wildlife officials say that three pet dogs and at least 18 wild animals appear to have been killed by deliberate poisoning along the Pantano Wash on Tucson's

A retired Tucson heart doctor won a national amateur astronomy award for helping University of Arizona scientists detect some of the faintest and most confounding galaxies in the universe.

An endangered species of bat has been confirmed in Arizona for the first time, using an emerging genetic sampling method and the work of an amateur scientist.

It's beginning to look a lot like Christmas at the Waterman Restoration Site on the western edge of Avra Valley, where discarded holiday trees are being used to bring the

One of Tucson's oldest conservation groups has adopted a new name.

The University of Arizona will hold its annual Pearl Harbor Remembrance Day ceremony at 9 a.m. Saturday at the USS Arizona Mall Memorial on campus.

Bollard-style walls designed to keep people from crossing the U.S.-Mexico border also block the movements of bears, mountain lions, deer and other animals, according to a study on border barriers

Tucson and other desert cities benefit more from the cooling effects of trees than other urban areas do, according to new study by the U.S. Geological Survey.