In the war against invasive species, it’s not clear that Arizona is winning. "We're losing, just like everyone else,” said ...

Global warming probably isn't triggering the fungal disease killing off Arizona frogs, some Arizona researchers say, despite a new study that concludes warming is causing the extinction of many frog ...

The Phoenix Zoo recently released 1,000 tadpoles into the Tonto National Forest, part of a program to save the threatened Chiricahua leopard frog. The zoo collects eggs every year, and those eggs ...