But how much should sociological concerns factor in? For example, the cover story in the current Jan/Feb issue of MIT's Technology Review is all about genetically modified foods (GMO's) MIT's position is that GMO's have an essential role in feeding the population and basically, it won't happen without using genetic modification. Potato: 863 US permits for GMO potatoes 0 current commercial varieties currently provided China is the largest potato crop producer with 86 million metric tons Rice: 286 permits for GMO versions of rice 0 current commercial varieties provided more than 90% of world's rice is grown in Asia, where efficiency ranges from 1 ton per hectare to 10 tons per hectare. Wheat: 461 permits for GMO species of wheat 0 current varieties provided wheat provides 21% of the total calories that the entire world consumes. Does the "fear" over genetically modified crops overshadow the future necessity that they be used?