Science: Sands of War

In the U.S., nearly all nuclear physicists know atomic secrets of some sort and therefore must keep their mouths shut for fear of an unintentional slip. Because he is bound by no security rules, Physicist Hans Thirring of Austria may speculate freely about atomic weapons on the basis of what is known to all the world's physicists. In the latest issue of Britain's Discovery, Dr. Thirring discusses the possibilities of radiological warfare, an old favorite of his (TIME, Aug. 7, 1950).

Every nuclear reactor, whether built to make plutonium or to generate power, produces...

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