High energy prices and bad weather -- including blistering hot temperatures, flooding in some places and drought in others -- hurt this year’s agricultural output. But farmers agree that a major problem is the soaring price of corn, which is used directly in products like cereal, and indirectly as livestock feed. Corn is nearly twice as expensive now as it was last summer -- even though US farmers planted the second-largest crop since World War II. Why? Well, 40 percent of the crop goes to produce 12.6 billion gallons of ethanol to meet the government’s renewable fuel standards. In other...