part 1. Transhumanist Dreams and Dystopian Nightmares -- Visions of Heaven and Hell -- Thinking about the Unthinkable -- part 2. The Hazards of Evolutionary Engineering -- Physical Harm to Children -- Psycho-Social Harm to Children -- Broader Consequences for Society -- The End of the Human Species -- Evolution by Nature or by Human Design? -- part 3. Managing Risk in Evolutionary Engineering -- Protecting the Children -- Preserving Societal Cohesion -- Providing for our Descendents -- Safeguarding the Human Species -- Epilogue.