Is a loved one missing some body parts? Are blonds becoming extinct? Is everyone at your dinner table of the same species? Humans and chimpanzees differ in only four hundred genes; is that why a chimp fetus resembles a human being? And should that worry us? There's a new genetic cure for drug addiction—is it worse than the disease?

We live in a time of momentous scientific leaps, a time when it's possible to sell our eggs and sperm online for thousands of dollars and to test our spouses for genetic maladies. We live in a time when one-fifth of all our genes are owned by someone else—and an unsuspecting person and his family can be pursued cross-country because they happen to have certain valuable genes within their chromosomes....

The future is closer than you think.