Genetic science is about to radically alter our lives. Sooner than you can imagine, human beings will be capable of diagnosing their own illnesses, designating the sex of their children, even designing the food they eat -- all as easily as using a cell phone. Now is the time for every one of us to take control of our DNA, and one man is uniquely qualified to show us how: Glenn McGee, bioethicist at the University of Pennsylvania, pioneer in the study of