Photo Courtesy of the Mexican Wolf Interagency Field Team.
After 30-plus years of wrangling, wildlife managers have yet to agree on a revised recovery plan for the endangered Mexican wolf. As a November deadline looms, a study by the Arizona Game and Fish Department and British Columbia’s Wildlife Genetics International offers guidance for finding common ground.
Diagram by Patrick J. Lynch, medical illustrator; C. Carl Jaffe, MD, cardiologist.
In one five-year period, college athletes suffered more than 10,000 concussions — one-third of them while playing football. But an unusual team-up has recently brought a new, biomarker-based concussion test one step closer.
As Congress eases rules for selling public lands and considers measures to weaken the Endangered Species Act, conservation efforts may rely increasingly on private facilities like the Phoenix Zoo, which supports its Arthur L. and Elaine V. Johnson Foundation Native Species Conservation Center with a portion of its gate receipts.
A population explosion of golden algae, a fast-growing invasive plant, has killed thousands of threadfin shad and some gizzard shad at Apache Lake, a reservoir in central Arizona.
A sacred site built in southwest Colorado around 800 years ago hints that the ancestral Pueblo people might have used geometry.
The analysis of the Sun Temple at Mesa Verde National Park offers the first hard evidence that a prehistoric North American society possibly employed such figures in construction.