The higher plants and animals, including man, are populous "nations" of closely cooperating cells. But back when life was new, the earth was inhabited by one-celled creatures only. Their achievement of cooperation was the greatest forward step in evolution.
How did the lonely cells first league together, subordinating their individual interests to the common good? Such questions fascinate biologists, for the mysterious force which makes cells cooperate is the basic law of multicellular life.
At the Marine Biological Laboratory at Woods Hole, Mass, (where the lecture-hall pointer is a fishing rod), a young Harvard biologist, Dr. John T. Bonner, is getting some of...
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