http://www.dailykos.com/story/2014/07/08/1312416/-Cartoon-Weed-war?detail=email A great cartoon. Yes, superweeds are real. They have evolved resistance to glyphosate, the active ingredient in Monsanto's Roundup herbicide. And they are becoming a big problem for farmers. So now some companies are developing genetically-engineered crops that can withstand applications of more toxic herbcides,. like 2,4-D. It's an insane war against nature, and it threatens human health.--Tom PS: As you may know, Roundup-Ready crops were introduced in 1996. They are genetically engineered to resist glyphosate (Roundup). - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - To unsubscribe from the IOWA-TOPICS list, send any message to: [log in to unmask] Check out our Listserv Lists support site for more information: http://www.sierraclub.org/lists/faq.asp Sign up to receive Sierra Club Insider, the flagship e-newsletter. Sent out twice a month, it features the Club's latest news and activities. Subscribe and view recent editions at http://www.sierraclub.org/insider/