Mother Jones: Earlier this year, President Obama signed a bill into law that will essentially preserve the status quo of U.S. agriculture for the next half decade. Known as the farm bill, the once-every-five-years legislation (among other things it does) shapes the basic incentive structure for the farmers who specialize in the big commodity crops: corn, soybeans, wheat, and rice. This year`s model, like the several before it, provides generous subsidies (mostly through cut-rate insurance) for all-out production...