Science: How to Outlive the Human Race

In general, rats study men more closely than men study rats. Mr. J. L. Nicholes, rodent specialist, is not only rough on rats (he claims to have killed 25 million), but .he is one man who has had his eye on them. Recently he published a book, Vandals of the Night (Publication Press, Pasadena; $2.50), which contains the hoarded fruit of his long, close scrutiny.

Rats, says Specialist Nicholes, were once wild creatures, living on fruits and seeds. But at some remote date, far back in human prehistory, rats made a momentous decision. "Why,"...

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