San Francisco Chronicle: Salamanders, those lowly amphibians that Bay Area folks can find in their moist backyards, are disappearing from a volcano in Guatemala and the mountains of Mexico – possibly another victim of climate change, UC Berkeley researchers say. With frog populations all over the world on the decline for decades, the latest discovery adds up to a “global amphibian crisis,” the Berkeley team contends in the current online edition of the Proceedings of the National Academy of …