Ethics: Creating A Child to Save Another

Many loving parents would not hesitate to sacrifice their own lives to save their child's. But should they create a new life to rescue an endangered son or daughter? A Los Angeles couple, Abe and Mary Ayala, has taken just such an unusual step. In April, Mary will give birth to a baby girl who was purposely conceived to serve as a bone-marrow donor for her ailing older sister. Anissa, 17, was found to have a virulent form of leukemia nearly two years ago, and her only hope is a transplant of compatible bone marrow that could allow her to produce...