In a speech last month, World Bank President Robert Zoellick said, "While many are worrying about filling their gas tanks, many others around the world are struggling to fill their stomachs, and it is getting more and more difficult every day ... In just two months, rice prices have skyrocketed to near historical levels, rising by around 75 per cent globally." And it's the same story for other grain

The world cannot solve global warming by starving the hundreds of millions of people who are desperately poor. A way must be found both to fight climate change and increase the global food supply.

That is why the United Nations has called for a five-year moratorium on biofuel production and urged its members to explore the possibility of deriving biofuels from agricultural waste and nonfood crops.

Jean Ziegler, United Nations special rapporteur on the right to food, says that using food crops to create biofuels when much of the world can barely afford to eat is "a crime against

"crime against humanity"