In the mid-1990s, Stephen Teret received an unnerving phone call from a friend at the U.S. Centers for Disease Control and Prevention. At the time, Teret was director of a CDC-funded injury-prevention centre at Johns Hopkins University. It studied all manner of injury risks: fire, poison, motor vehicles and guns. "That person told me they would appreciate it if I did not speak about gun policy anymore," recalled Teret, who left the centre shortly after to create Johns... (GunPolicy.org)