Watch NOVA S20E08
Private Lives of Dolphins
Wherever we shed our body cells, we leave an indisputable identity card: our DNA. NOVA investigates the new science of DNA typing which is putting increasing numbers of murderers and rapists behind bars. . You can watch NOVA S20E08 here.
Air date: November 17, 1992 on PBS at 9:00 PM
Watch NOVA S20E08 online
