Glyphosate, introduced in 1974, is the active ingredient in the Monsanto herbicide Roundup, and is the most widely used herbicide in the United States–in 2007 185 million pounds were applied by U.S. farmers, up from 85-90 million in 2001. Its use is accelerating with the advent of herbicide-tolerant genetically modified (GMO) crops. Roundup also contains… Read More