Welcome To The Brave New World
The debate over stem cells and cloning stirs deep passions, but experts suspect much more profound and much more divisive arguments as reproductive technology advances. On a very limited level some couples already choose their children on the basis of genetics. In vitro fertilization offers a chance to test different embryos and select the one without for example without down syndrome. In ten or twenty years science may give us many more choices, not just to prevent disease, but to engineer smarter, taller, thinner, stronger children and pass those traits on to later generations. We could, in short, control human evolution. The ethical questions are staggering. To pick just one, might we breed two strains of humans; the genetically enhanced and the natural.
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