
  Many are looking to biofuels as a renewable and clean source of energy. However,  biofuels - made by producing ethanol, an alcohol fuel made from maize, sugar  cane, or other plant matter - may be a penny wise but pound foolish way of doing  so. The grain required to fill the petrol tank of a Range Rover with ethanol is  sufficient to feed one person per year. Assuming the petrol tank is refilled  every two weeks, the amount of grain required would feed a hungry African  village for a year  » 
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