Seeing Value in Poisons, a Toxicologist Takes On a Late Laureate

Herbert Gehr, Time Life Pictures, Getty Images

Hermann J. Muller won a Nobel Prize in 1946 for his work showing that mutations can be induced by X-rays.
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One late fall day in 1946, long before global-warming fears and Tea Party anger, the Nobel laureate Hermann J. Muller stood before the world's scientists and confronted a thoroughly modern political and professional dilemma.

Mr. Muller, collecting...

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