Last December I wrote about melamine in infant formula. Based on the information I had at that time, I believed that the most likely sources of melamine contamination in our food supply was probably through intentional adulteration of animal feed, and, as Dr. Stephen Sundlof of the FDA suggested, melamine-based food packaging and plasticware. New research suggests a potential source of the melamine contamination may be a pesticide used on crops and in animal feed. More on Pesticide Linked to Melanine in Infant Formula