Clean Air Plus More Fuel: Pond Scum to the Rescue! Staff
by Staff
You know that icky scum floating on the surface of every stagnant pond and puddle? Guess what?! It's a great source of fuel oil! Not only that, it grows by eating carbon dioxide, methane, nitrous oxide, and ozone -- the nasty stuff put out by power-plant smokestacks and cattle and hog farms.

After chowing down on smokestack emissions and barnyard stench to clean the air, the algae's oily guts can be used as biodiesel fuel.

It's estimated that it would take 144 billion gallons of biodiesel to replace the 60 billion gallons of petroleum diesel and 120 billion gallons of gasoline currently used by vehicles in the United States.

Unlike farm crops such as soybeans or cannola, which require farmland and petroleum-burning planting and harvesting and produce a maximum of 145 gallons per acre, algae can be grown on the rooftop of a factory or power plant and yield 10,000 gallons per acre, vastly increasing the available biodiesel supply.

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