![]() ![]() ![]() Stimulated by excitement over recombinant DNA and the first test-tube baby in 1978, the surge of interest in genetic transformations of the human explored genetic engineering rather than evolution as the source of the posthuman. The second phase got under way in the late-1970s and lasted up until just before the millennium. It consists of well-known books by most of the leading authors of the period: Clarke's Childhood's End, Sturgeon's More Than Human, Van Vogt's Slan, Heinlein's Beyond This Horizon and Methuselah's Children, and a number of lesser known texts. ![]() In this first phase the advent of the posthuman is brought on by eugenics or sudden mutations caused by fallout from nuclear war. The article traces two phases of SF about human species change, the first in the 1940s and early 1950s, the so called “golden age" of SF. ![]()
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