Corn is basic to America's diet, from feed for all the animals we eat, to cereal and even Gatorade. We also depend on fuel from corn-made ethanol. This year's drought is making Midwestern cornfields look like the Dust Bowl of the 1930. Will prices rise at the grocery store? Because of American corn exports, the impact could be worse overseas. But, for some American farmers, there's surprising prosperity. We find out why.