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Publisher's Postscript

While the manuscript of World Without Men was being prepared for publication, the staff of Ace Books were startled to see two news items, appearing independently, which unexpectedly underline the credibility of Charles Eric Maine's novel. One appeared in a story in the New York Times, for Oct. 16, 1957. This told of the announcement at a meeting of a "planned parenthood" society of advanced work on a "synthetic steroid tablet" to be taken orally to create a limited period of sterility. Several such projects are being experimented with in various laboratories, with a certain amount of success.

The other item is from the Nov. 9, 1957 issue of Science News Letter, the cover of which featured a photo of a healthy young turkey created by parthenogenesis without the aid of a male parent. The article spoke of new advances in the technique of producing "spontaneous embryos" in poultry by a method of vaccinating the females of the species.

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