Voice of America: Soaring food prices are causing big problems in many parts of the world today. One factor in the ballooning costs may be the increasing global demand for biofuels – vehicle fuels made at least partly from corn (maize) or other food crops. From Washington, VOA’s Kent Klein looks at the problem and some possible solutions. Some critics of biofuels contend that using food-based fuel to power vehicles amounts to a competition for food between people and automobiles. World Bank …