This week, we're examining soda in America, and today, a look at children and families. Michele Norris talks with Agriculture Secretary Tom Vilsack about his goals for nutrition standards in schools, about the choices he hopes young people and their families will learn to make, and about his own soda habits. She also speaks with community health activist Nura Green of the Aban Institute about the challenges children and families face in urban environments, where there are few healthy choices.