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Let the cars run on grass

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American studies show that grass can improve the environmental accounts for biofuels significantly. If you use natural grass species, you get five times as much energy back as you use on growing the crops and producing the fuel, while you only get one and a half time as much energy back if the production of bioethanol is based on maize.

FiB nr. 18-2006_02 - UK.pdf — PDF document, 74 kB (76493 bytes)

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