In the Name of Eugenics: Genetics and the Uses of Human Heredity
In the 19th century, when the idea of eugenics (selective breeding to generate superior members of a species) was invited off the farm and into the parlor, it was a far-fetched notion with little possibility of success driven by clearly racist motivations. But at the end of the 20th century, biotechnological techniques and other agendas are making forms of human eugenics plausible.  Rich in anecdote, narrative, and fact. An important book.