When Elisabeth Bing became interested in childbirth techniques in the 1950s, women were often heavily medicated, dads were generally nowhere near the delivery room and expectant parents had far less information than many do today. Bing, the Lamaze International co-founder who popularized what was known as natural childbirth and helped change how women and doctors approached the delivery room, died Friday at 100 in her New York apartment, the organization said Saturday. The cause of her death wasn't immediately known. Trained as a physical therapist, Bing taught breathing and relaxation techniques to generations of expectant mothers, wrote several books about...