What will happen to our notions of marriage and parenthood as reproductive technologies increasingly allow for newfangled ways of creating babies? What will happen to our understanding of gender as medical advances enable individuals to transition from one set of sexual characteristics to another, or to remain happily perched in between? What will happen to love and sex and romance as our relationships migrate from the real world to the Internet? Can people fall in love with robots? Will they? In short, what will happen to our most basic notions of humanity as we entangle our lives and emotions with the machines we have created?