Associated Press: Environmentalists are suing the federal government over protections for a threatened frog found only in New Mexico, Arizona and a small part of Mexico, arguing that the amphibian is just one of many species facing increasing pressures due to climate change. Once found at hundreds of moist sites across the Southwest, the Chiricahua leopard frog has disappeared from more than 80 percent of its range as a result of disease, nonnative predators, habitat loss and climate change. …