Have you noticed the price of your breakfast cereal going up recently? Along with bread, milk, beef,.... This Paul Krugman editorial does a good job explaining all the reasons. Some of the reasons are beyond our control, but some aren't. As Krugman points out, part of the reason is bad policy. Congress-passed legislation that led to corn-based ethanol being added to our gas tanks is definitely part of the problem. And, one that is reversible.
Grains Gone Wild - New York Times