Gory Details

Crime scene DNA has traditionally been used to link a victim to a criminal. With a new process known as phenotyping, though, investigators are using that DNA to reverse engineer a profile of what the perpetrator might look like. Today on “Think,” Lauren Silverman talked with National Geographic online science editor Erika Engelhaupt about phenotyping and other CSI innovations. The story, “Beyond a Reasonable Doubt” appears in the July issue of National Geographic magazine.