Such concern has become global. The World Bank has estimated that corn prices rose by more than 60 percent from 2005 to 2007, largely because of the US ethanol program, combined with market forces. The United States is the world's biggest biofuel producer, overall.Looking at the food situation more broadly, several top international food scientists have recommended that the use of food-based biofuels, including ethanol, be halted. Said the AP:
"The three senior scientists with an international research consortium pushing a biofuel moratorium said nations need to rethink programs that divert food such as corn and soybeans into fuel, given the burgeoning worldwide food crisis. The group, CGIAR, is a global network that uses science to fight hunger. It is funded by dozens of countries and private foundations.... 'We need to feed the stomach before we need to feed our cars,' said Rattan Lal, an Ohio State University soil sciences professor…. 'We have 1 billion people who are food insecure. We can't afford the luxury of not taking care of them and taking care of gasoline.' "