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From trash to treasure: Everyday fuels in your garbage can

Image source: AydAn Mutlu | E+ | Getty Images

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Corn

According to Discovery News, corn is the largest source of biofuel in the U.S. today. Unfortunately, it's expensive to process, so it would carry high costs at the pump.

Corn is used in the creation of ethanol, an alcohol fuel. It derives from the sugars found in the grain, and all sugar crops can be fermented to produce it, according to the New York State Department of Environmental Conservation.

Image source: AydAn Mutlu | E+ | Getty Images