In the 1990s, EWG’s research was a major factor in the passage of the landmark pesticide reform law, the Food Quality Protection Act. EWG was among the first to draw attention to the health threat posed by the weed-killer atrazine and conducted the first extensive tests for the chemical in tap water in 29 Midwest cities. In the last several years Cook and EWG have been in the forefront of national and state campaigns to require the labeling of foods that contain genetically engineered ingredients.
