Riots in Haiti over explosive rises in food costs have claimed the lives of six people. There have also been food riots worldwide in Burkina Faso, Cameroon, Cote d’Ivorie, Egypt, Guinea, Mauritania, Mexico, Morocco, Senegal, Uzbekistan and Yemen. The Economist, which calls the current crisis the silent tsunami, reports that last year wheat prices rose 77 percent and rice 16 percent, but since January rice prices have risen 141 percent.