"Kira Testin knew that something was wrong before she and her husband ever saw the fertility specialist. "We weren't naïve, but it still was devastating to hear that we would be unable to conceive naturally," she said. For the Testins and millions of other couples, in vitro fertilization is their only chance at pregnancy. And their chances are low at that. More often than not, IVF takes repeated, costly attempts. Now scientists have found another potential obstacle for would-be parents. New research has turned up evidence of a link between endocrine-disrupting chemicals in the environment and poor IVF outcomes."