Science: fy for Doomsday

Herman Kahn's ponderous shocker, On Thermonuclear War, frequently mentions a weapon whose purpose is to end all human life: the Doomsday Machine. Kahn discusses its political uses as calmly as if it were a bug killer, but he gives few technical details. In the latest Bulletin of the Atomic Scientists, Physicist W. H. Clark spells out some little-known facts about Doomsday Machines—and some of the more refined horrors that nuclear war could bring. Both the U.S. and Russia already can build near-Doomsday bombs, but far more disturbing is the fact that they are sufficiently inexpensive and simple to be built...

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