LiveScience: Pesticides from California's valley farms are collecting in the tissues of a singing treefrog that lives in pristine national parks, including Yosemite and Giant Sequoia, a new study finds. The chemicals include two fungicides never before found in wild frogs, said Kelly Smalling, lead study author and a U.S. Geological Survey (USGS) research hydrologist. The study was published today (July 26) in the journal Environmental Toxicology and Chemistry. "Fungicides have been registered for use for...