The Federal Bureau of Investigation has undertaken a review of convictions where FBI forensic experts may have exaggerated scientific testimony regarding hair analysis. In other words, agents may have claimed that similarities between compared hairs had much greater significance than was actually warranted by the facts.  How many convictions will be overturned is unknown. The FBI is conducting the review of convictions in conjunction with the Innocence Project and the National Association of Criminal Defense Lawyers.

Read the Washington Post story.