>> reporter: the items of the man and women are documented, all are clues about who they are and the dreams that were cut short. >> even if you say to yourself it's worth my life, i'm willing to risk my life, think about your family. >> reporter: dr. stern believes she has enough evidence from the man and the woman that you watched in this story to identify them, but that's not always the case. she says that she has about 160 bodies in her custody, some of them have been identified, others have not. rosa flores, cnn, laredo, texas. all right. after the break we will head back to cornwall, england, where we're soon expecting the leaders of the u.s. and the uk to meet for the first time ahead of the g7 summit. stay with us. you love rich, delicious ice cream. but your stomach doesn't. well, that disagreement ends right now. lactaid ice cream is the creamy, real ice cream you love that doesn't have lactose.