Wrong to blame biofuel

I have no doubt that the Guardian – and reportedly the World Bank – is wrong in attributing 75% of global food price rises to biofuels. I am sure that that drive towards biofuels is contributing to higher prices but the increases are not caused by the technology itself. The American government is giving huge subsidies to the production of a particularly inefficient form of biofuels (corn ethanol) as a result of its obsession with energy security. More efficient ways of producing biofuels already exist, for example from Brazilian sugar cane, and no doubt better forms will emerge in the future.