Biofuels learn to eat less


By Helen Knight THE feast is coming to an end for biofuel producers. Their supposedly clean, green fuel has been gobbling up some of the choicest food crops, including corn, rape and soya, leading to controversy and protests around the world. Now the industry increasingly finds itself forced to dine on more meagre fare: the inedible scraps left by other industries. But it is now finding ways to turn these scraps into a hearty dinner – and it could even provide for others,
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