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While wind turbines provide a clean source of energy, they still have a number of short-comings as well as vocal opponents who often come from the sore-sight front. San Francisco, which probably wouldn't have the space for a field of wind turbines anyway, is proposing to decrease the city's dependence on foreign oil by implementing turbines submerged underwater that would sit on the floor of the Bay. Preliminary studies say that San Francisco's tides and currents could generate enough power to l