In science news this week: It’s Spawning Season for Salmon, Scientists Trying to Revive Extinct Central Valley Salmon Run: “Fresno County may seem an unlikely setting for salmon restoration and research, but some of the California Department of Fish and Wildlife’s (CDFW) most ambitious work with salmon anywhere is taking place in the heart of the parched Central Valley.  Since September, CDFW fisheries biologists have been spawning spring-run Chinook Salmon broodstock in the shadow of Friant Dam on the San … Continue reading SCIENCE NEWS: Spawning season, Invasive species in the Delta, Toxic site cleanups, Monarch butterflies, Shifting climate zones, and more …