Criminal Exonerations: 2,000 Convicted Then Exonerated In U.S. Over Last 23 Years, Says Study

There is no official record-keeping system for exonerations of convicted criminals in the country, so academics set one up. The new national registry, or database, painstakingly assembled by the University of Michigan Law School and the Center on Wrongful Convictions at Northwestern University School of Law, is the most complete list of exonerations ever compiled.