Medicine: Health Engineers

As man has worked up from the opposable thumb to the implosible bomb, he has learned endless ways to change his environment. He can raise or raze forests, reverse rivers, level mountains or reshuffle atoms, but he cannot alter the fact that his health depends, as always, upon the food he eats, the water he drinks and the air he breathes. To safeguard these, he has to work, in an endless spiral, for more complete control of his environment.

Last week the U.S. took a big step toward that fuller control. On Cincinnati's outskirts,...

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