dr. shanna swan, an epidemiologist at the university of rochester medical school. dr.compared the levels of phthalates in a group of pregnant women with the health of the baby boys they gave birth to. did you find that the higher the level of phthalates in the mother's urine during pregnancy, the greater the problems in the young boys? >> yes. >> what did you find in the babies? >> we found that the baby boys were, in several subtle ways, less completely masculine. >> dr. howard snyder, a pediatric urologist at children's hospital in philadelphia, says swan's findings line up with what he's seeing in newborn baby boys-- an alarming increase in deformed sex organs. >> lie him down, and let me just examine him. >> dr. snyder operated on one-year-old griffin to correct something called hypospadias, a birth defect that causes problems in urination. but he's good now, right? >> he's a healthy little guy, who's, i think, going to get through the rest of life just aiming without any difficulty at all. >> that's great. >> we hear that there are more and more and more cases of