Cattle trounce around a huge pile of manure as a pen is cleaned out at the JBS feed lot west of Greeley in Kersey, Colo. (AP/Ed Andrieski)

Huge Dead Zone In Gulf Of Mexico Traced To Midwest Meat Industry

The dead zone in the Gulf has been monitored for the past 32 years. It stretches from the mouth of the Mississippi River into Texas and is created every year by low oxygen levels in water.