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. This hour, guest host Lauren Silverman will talk about phenotyping – and a host of other CSI innovations – with National Geographic online science editor Erika Engelhaupt. The story “Beyond Reasonable Doubt” appears in the July issue of the magazine.
