Following a severe drought earlier this year, the U.S. corn harvest is the weakest it has been in three years, driving corn prices to an all-time high and dampening hope for an expansion in global food supplies, the Daily Herald reports. The U.S. Department of Agriculture forecasts production of 314.7 million metric tons, a drop of 27.4 million tons from four months ago. While global food prices tracked by the United Nations dipped 9.1 percent from a...