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Precisely Constructed Polymers

In the chainlike giant molecules made by man, the units in the chain are generally oriented at random. Now these units can be oriented in regular sequence, giving rise to polymers with useful new properties

By Giulio Natta

Cleaning Symbiosis

The invasion of the oceans by skin-diving biologists has led to the discovery that a surprisingly large number of marine organisms either live by cleaning other marine organisms or benefit by being cleaned

By Conrad Limbaugh

The Reproduction of Sound

In the design of systems to record and replay complex sounds the acoustical engineer seeks not to re-create sounds exactly but to satisfy the peculiar requirements of the ear and brain

By Edward E. David

Enzymes in Medical Diagnosis

Certain diseases are accompanied by changes in the enzyme content of the body fluids. Already used in some diagnoses, these changes may make it possible to detect a cancer before it is a malignancy

By Felix Wróblewski

The Life Span of Animals

What makes man and other animals age? One approach to the problem is to reflect on age records and to study the effects of different factors on the longevity of experimental animals

By Alex Comfort

Low-Altitude Jet Streams

Meteorologists have recently discovered that during the night strong winds often develop at altitudes between 800 and 2,000 feet. These winds appear to play a role in the birth of storms

By Morton L. Barad


  • 50 and 100 Years Ago: August 1961

  • Astroblemes

  • Science and the Citizen: August 1961

  • Hacilar: A Neolithic Village Site

  • Letters

    Letters to the Editors, August 1961

  • Recommended


  • Mathematical Recreation

    Mathematical Games

  • Amateur Scientist

    The Amateur Scientist

  • Departments

    The Authors

  • Bibliography

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August 1961

See the World from a Different Perspective

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