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Photos: Betting big on biodiesel

Start-up GreenFuels Technologies uses algae to help curb power plant emissions, while others want to pump biodiesel into your car.

    Betting big on biodiesel

    Start-up GreenFuel uses 3-meter-high tubes to mix algae with sunlight, water and carbon-carrying emissions from power plants to create biodiesel fuel.

    Credit: GreenFuel


    Betting big on biodiesel

    The algae system is being put to the test with the help of MIT and an energy utility in the southwestern United States.

    Credit: GreenFuel

    energy utility

    Betting big on biodiesel

    GreenFuel isn't alone in its work on biodiesel. Others include the Virginia Biodiesel Refinery, which President Bush visited on May 16.

    Credit: White House photo by Eric Draper

    Bush at Virginia Biodiesel Refinery

    Betting big on biodiesel

    While GreenFuel's biodiesel is intended for use in power plants, other companies are producing plant-based fuel for cars, as at this filling station in Toronto.

    Credit: Zuma Press

    Toronto filling station

    Betting big on biodiesel

    Bloomington, Ind., uses the biodiesel fuel B20 in some vehicles in its public transportation fleet.

    Credit: National Biodiesel Board

    Bloomington bus