NotSanguine writes in with a story about a review of the forensic evidence in thousands of criminal cases to see if any defendants were wrongly convicted. "The Justice Department and the FBI have launched a review of thousands of criminal cases to determine whether any defendants were wrongly convicted or deserve a new trial because of flawed forensic evidence, officials said Tuesday. The undertaking is the largest post-conviction review ever done by the FBI. It will include cases conducted by all FBI Laboratory hair and fiber examiners since at least 1985 and may reach earlier if records are available, people familiar with the process said. Such FBI examinations have taken place in federal and local cases across the country, often in violent crimes, such as rape, murder and robbery."