Herald: The rush for biofuel altern-atives to petrol has had a huge impact on global food stocks, increasing the cost of food by 75%, according to an authoritative report for the World Bank. Details of the report come just ahead of the publication of the UK Government’s own study on the impact of biofuels, expected to come to the similar conclusion that planting crops for fuel instead of food has had “significant” distorting effect on food prices. The report by Professor Ed …