Researchers at Indiana University posit a 3% increase in birth defects in infants conceived during the spring-summer months when common ag pesticides are most prevalent in water and air. Their study covers several midwestern states. http://www.webmd.com/baby/news/20090327/do-pesticides-make-birth-defects-crop-up Bill Witt - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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