Telegraph (UK): Rarely in political history can there have been such a rapid and dramatic reversal of a received wisdom as we have seen in the past 18 months over biofuels – the cropping of living plants, such as soya beans, wheat and sugar cane, to generate energy. Two years ago biofuels were still being hailed as a dream solution to what was seen as one of the most urgent problems confronting mankind – our dependence on fossil fuels, which are not only finite but seemed to be threatening the world …