A former physician at one of the nation’s most respected pediatric institutions is facing federal charges for allegedly amassing one of the largest known personal collections of child sexual abuse material in recent history. Howard M. Saal, 73, a former geneticist and dysmorphologist at Cincinnati Children’s Hospital, appeared in federal court this week after investigators say they uncovered a horrifying trove of over 153,000 images and 470 videos of child pornography, with some victims reportedly being as young as newborns. According to charging documents, the nightmare began when a Hamilton County Sheriff’s detective assigned to the FBI’s Child Exploitation Task...