As corn prices have risen with demand for ethanol in recent years, corn farmers are prospering. But others, such as hog farmers who rely on corn feed, are facing tough times, and some critics blame ethanol demand for rising food prices worldwide.

[Read, Listen and/or Watch](http://www.pbs.org/newshour/bb/science/jan-june08/ethanol_05-15.html “Read the Article and/or Listen or Watch the Report”) (PBS)