Science: The Triumphant Squirrel

Linemen of the Wisconsin Telephone Co. were out on the road last week busily repairing the damage done to telephone cables by one of their most persistent natural enemies: the Sciurus carolinensis, or Eastern grey squirrel. To the engineers of Bell Telephone Laboratories, the problem is old stuff. In an average year, they figure, the grey squirrel gnaws through some half million dollars worth of U.S. cable. So far, no one has found a feasible way to stop him.

A Switch to Salt. Bell Labs' war on the grey squirrel dates back to the turn of the century, when the company first...

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