Non-DNA Wrongful Convictions

We've all heard about the use of DNA testing to demonstrate innocence, but what about cases where there isn't DNA evidence? The Center on Wrongful Convictions at Northwestern University of law has a podcast where Rob Warden discusses the challenges of non-DNA cases. He points out that "DNA evidence is present almost exclusively in sexual assault cases, but the causes of wrongful convictions--such as erroneous identifications, junk science, and false confessions--are found in all kinds of cases, from armed robbery to murder."

You can view a summary of his comments or listen to his interview with podcast host John Maki at http://innocencespeaks.libsyn.com/index.php?post_id=441240.