Forensics Myths Debunked - The Truth Behind Real CSI Evidence - Popular Mechanics
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The Truth Behind Real CSI Evidence - Popular Mechanics

As DNA testing has made it possible to re-examine biological evidence from past trials, more than 200 people have had their convictions overturned. In approximately 50 percent of those cases, bad forensic analysis contributed to their imprisonment.

Forensic science was not developed by scientists. It was mostly created by cops, who were guided by little more than common sense. And as hundreds of criminal cases begin to unravel, many established forensic practices are coming under fire. PM takes an in-depth look at the shaky science that has put innocent people behind bars.