Bloomberg: Prime Minister Gordon Brown said the U.K. government is concerned that biofuels are stimulating inflation and pushing up food prices around the world. Brown, in a letter to leaders of the Group of Eight nations, urged countries to study the impact of using the fuels made from crops including corn and soybeans. The U.S. and other nations are encouraging the fuels such as ethanol to be added to gasoline as a way of reducing damage to the environment. The price of rice, the …