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…

Switchgrass, a prairie grass grown on marginal farmland and processed into ethanol, can produce five times more energy than it takes to grow the crop, according to a new study.

By PBS News Hour

The high cost of oil and a national push toward alternative fuels has pushed ethanol production and corn prices to skyrocket. In eastern Colorado, corn farmers and other stakeholders contemplate the future of ethanol, which some researchers fear may not…