forty percent of all corn grown 40 percent of U.S. corn production too heavily corn "It's Time to Rethink America's Corn System" Well, actually Scientific American "It's Time to Rethink America's Corn System" It’s Time to Rethink America’s Corn System complicated Scientific American explains Scientific American It’s Time to Rethink America’s Corn System over one-third of US corn produced huge areas writes University of Minnesota researcher Jonathan Foley 40 percent Per Scientific American Scientific American 36 percent of the U.S corn crop 40 percent More than a third Scientific American sa to zmenilo about 40 percent of the U.S. corn crop crop insurance Well, actually livestock, cars, about 40 percent of the U.S. corn crop huge areas 36 percent of the U.S corn crop overproduced more than 85%