The smallest baby born alive is the world's most premature living baby, Amillia Taylor, who was born at 21 weeks and six days, appears in this undated handout photo by the Baptist Children's Hospital in Miami. Born 24 October 2006, Amillia Taylor weighed just 280 grams (10 ounces) and measured 240 centimeters (9.5 inches,) slightly longer than a ballpoint pen, according to the hospital. The American Association of Pediatrics indicates that babies born at less than 23 weeks of age and 400 grams...