Global food price volatility will be the focus of World Food Day celebrations in Rome which will also address the issue of massive farmland purchases by rich countries.
Chinese state media say that a tourist bus carrying many elderly passengers has overturned on a winding highway in southern China, leaving 10 people dead and 33 injured.
Protesters torched cars and smashed up banks in Rome in the worst violence of worldwide demonstrations against corporate greed and government cutbacks.
Europe sought Saturday to convince its G20 partners that it can resolve a debt crisis that is threatening to drag the world economy back into recession.