A shocking statistic was found in a report from the U.S. Geological Survey, a study of pesticide and herbicide use from 1992 to 2012. During the two decades, an estimated 2.6 billion pounds of Monsanto’s glyphosate-based herbicide was used on America’s agricultural land. It’s been the primary herbicide used with genetically engineered crops since mid-1990s when Monsanto introduced their “Roundup Ready” corn and soybeans.