The Bush administration has slipped a controversial ingredient into the $770 million aid package it recently proposed to ease the world food crisis, adding language that would promote the use of genetically modified crops in food-deprived countries. The value of genetically modified, or bio-engineered, food is an intensely disputed issue in the U.S. and in Europe, where many countries have banned foods made from genetically modified organisms, or GMOs. Opponents of GMO crops say they can cause unforeseen medical problems. They also contend that the administration's plan is aimed at helping American agribusinesses. This is a hot topic now with the food crisis," said Ronnie Cummins, national director of the Organic Consumers Association. "I think it's pretty obvious at this point that genetically engineered crops ... don't increase yields. There are no commercialized crops that are designed to deal with the climate crisis." Noah Zerbe, an assistant professor of government and politics at Humboldt State University in California, said that GMO crops might not be appropriate for developing countries. "You get fantastic yields if you're able to apply fertilizer and water at the right times, and herbicides to go along with that," Zerbe said. "Unfortunately, most African farmers ... can't afford these inputs." The U.S. tried to introduce GMO crops to Africa in 2002, with mixed results. European Union opposition was part of the reason that several African nations that year balked at an offer of U.S. aid that included corn, some of which was genetically modified. [Despite] a severe drought, Zambia rejected the U.S. aid altogether.