Forensic science could deliver blow to crime, but ethical questions linger

Engineering News South Africa
We all leave something behind wherever we go, much of it unintentionally. This is more a biological notion than a romantic one. Watch enough American cop shows and you will know how a little bit of hair, skin, saliva, sweat or blood left at a crime scene all contain deoxyribonucleic acid – or DNA, as it is better known.