Recent data from the U.S. Department of Agriculture says that over 90 percent of U.S. field corn is genetically modified. That figure has nearly doubled over the past 10 years.
Most of the corn farmers plant has been embedded with a gene—usually from a bacteria—that protects the corn from pests or herbicides.
Ten years ago, less than half of the corn planted had a genetically modified trait. Today, 93 percent of all field corn does, up from 90 percent last year.