Every day in American courtrooms, forensic science offers evidence to judges and juries: fingerprints, ballistics, shoe prints, even bite marks.\xa0 It\u2019s supposed to provide scientific proof of guilt.\xa0 But what if it\u2019s a lot less reliable than we think?\xa0 Our guest is Brandon Garrett, Professor of Law at Duke University School of Law and author of \u201cAutopsy of a Crime Lab: Exposing the Flaws in Forensics.\u201d\xa0\xa0