For Dr. Philip Sunshine, holding a baby weighing less than two pounds is nothing out of the ordinary. The Stanford doctor has been saving the lives of premature babies for more than 50 years. He was one of the first doctors to put babies on ventilators and to let parents spend time with premature babies. When Sunshine first started, most premature infants had less than a 50 percent chance of survival -- today their survival rate is over 90 percent. Dr. Sunshine joins us to talk about the changing field of neonatal and developmental medicine.