More than half of world ethanol production is produced from sugar and sugar byproducts, with Brazil being by far the world leader. Currently, there is no commercial production of ethanol from sugarcane or sugar beets in the United States, where 97 percent of ethanol is produced from corn. Above you see the price of sugar rising and this is exactly also happening with corn.
Is it worth to use biofuel and live greener, but risking that in the poor countries the prices for food rise too much? I think we should look to other "green" sources and move our focus on big companies instead of the consumer.