A disturbing new report says our criminal courts have been relying on bad evidence. A forthcoming study from the National Academy of Sciences on the poor quality of forensic science in America’s courtrooms is expected to send shockwaves through the criminal justice system. According to The New York Times: People who have seen it say it is a sweeping critique of many forensic methods that the police and prosecutors rely on, including fingerprinting, firearms identification and analysis of bite marks, blood spatter, hair and handwriting. The report says such analyses are often handled by poorly trained technicians who then exaggerate...