A petition that aims to hasten U.S. energy independence and cut down on carbon dioxide emissions by installing tidal turbines in coastal cities that will, by 2020, make up 20% of the energy produced by coastal cities in the U.S. The tidal turbines in use must generate more than 100 kilowatts and the turbines in use must be placed in waters deeper than 50 feet so as not to harm wildlife. Construction must begin no later than 2015



