New tests reveal popular cereals and snacks could have potentially dangerous levels of the same chemical found in weed killer called glyphosate and some reports say it may cause cancer. Of the 21 General Mills products examined by the Environmental Working Group, the highest levels of glyphosate were found in Honey Nut Cheerios Medley Crunch, which had more than five times what the advocacy group considers a safe level. Original Cheerios had more than four-and-a-half times what the group believes is a safe level. The products are considered safe under EPA standards. Dr. David Agus joins "CBS This Morning" to discuss what people should know.
