Guardian: The soaring price of wheat has raised questions about the UK’s commitment to biofuels as it attempts to wean itself from its dependence on oil. A network of biorefineries that convert wheat and other crops into bioethanol that can then be blended with petrol are being developed as the UK looks to meet its EU renewable transport fuels obligations. But the huge amounts of wheat that will be used in the process – up to a fifth of the UK’s current annual production within four …