Sep 19, 2012  · LONDON, Sept 19 (Reuters) – Rats fed a lifetime diet of Monsanto’s genetically modified corn or exposed to its top-selling weedkiller Roundup suffe. A good case in point is the latest dust-up over glyphosate, the active ingredient in Monsanto’s Roundup. We’re still waiting. Write to Chuck Norris with your questions about health and fitness. Follow Chuck Norris through his official. In secret internal Monsanto documents released on…