"Herbicide Scrutiny Mounts as Resistant Weeds Spread in U.S."
"Concerns about the world's most popular herbicide continue to mount, as U.S. agricultural experts note spreading weed resistance to glyphosate. As the key ingredient in Monsanto Co's Roundup herbicide products as well as about 700 other products, glyphosate is widely used on farms as well as residential lawns."