The issue also drills down into the subtler science of contaminants, from mercury in fog to copper effects on salmon senses and the nature of the mystery goo that slimed Bay birds in January. Hopeful events are also covered: the North Bay’s Cullinan Ranch felt the touch of the tides for the first time since the 1880s and SFEP is working hard to update the grandest plan to save the health of the Estuary ever: the CCMP.