Science Says What? is a monthly column written by Great Lakes now contributor Sharon Oosthoek exploring what science can tell us about what’s happening beneath and above the waves. The oil flowed black and shiny, coating turtles and waterfowl with a smelly goo and transforming grasses and bushes along the banks from green to oily black. By the time engineers closed the pipeline valves, an estimated 3.2 million liters (843,000 gallons) had