Twenty years ago, on an outbuilding of his Southern California estate, tycoon Robert K. Graham began a most remarkable project: the Repository for Germinal Choice, a sperm bank for Nobel Prize winners. Part altruism, part social engineering, part science experiment, the repository was supposed to help reverse the genetic decay Graham saw all around him by preserving and multiplying the best genes of his generation. By the time Graham's repository closed in 1999, his genius sperm had been responsible for more than 200 children.
