Here at the WCB, we’ve posted many, many articles dealing with the highly questionable scientific validity of most all forensic disciplines. I’m very happy to report that there is now a blog dedicated to that issue.
Dr. Michael Bowers is a practicing dentist and forensic odontologist in Ventura, CA, and a long time forensic consultant in the US and international court systems. His newest book, “Forensic Testimony, Science, Law and Expert Evidence” with Elsevier/Academic Press is available on Amazon.
Dr. Bowers has some refreshing and insightful views on the validity of forensics, and maintains a blog addressing the “junk science” that so many in the justice system refer to as “forensic science.” Please visit that blog here: Forensics in Focus.
[Editor’s note: I, personally, refuse to call them forensic sciences. They are not sciences. Technologies? Disciplines? Perhaps, but they’re not sciences.]
PS: I have reviewed Dr. Bowers’ new book Forensic Testimony - Science, Law, and Expert Evidence, and you can read that review here. I highly recommend it.
Wrongful Convictions Blog 
Applied Science is still Science.
Not when it fails to use the scientific method, and relies on flawed inductive reasoning.
And …. not when declaring a “match” rests solely on the OPINION of an examiner.
And …. not when there is a complete lack data from which a probability of occurrence can be calculated.