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Features

Residential Segregation

An objective index shows that in every American city Negroes live separately from whites. Of the three principal causes-choice, poverty and discrimination-the third is by far the strongest

By Karl E. Taeuber

Infrared Astronomy

The radiation in the spectral region between light and radio waves carries much information about celestial objects. New detectors are making this information increasingly available

By Bruce C. Murray and James A. Westphal

Nuclear Fission

Twenty years after the detonation of the first nuclear explosion the study of the splitting of the atomic nucleus in two is still the best source of information about highly deformed heavy nuclei

By R. B. Leachman

The Production of Heat by Fat

In addition to normal "white" fat, many newborn mammals and adults of hibernating species have "brown" fat deposits. It is metabolism in brown fat cells that increases heat output as a response to cold

By David Hull and Michael J. R. Dawkins

Density Gradients

Devices incorporating this simple concept have recently found application In fields as diverse as solid-state physics, the manufacture of plastics and the chemistry of the genetic code

By Gerald Oster

The Swimming Energetics of Salmon

These fish perform a mighty metabolic feat when they swim hundreds of miles upstream without food to spawn. Experiments in the field and in the laboratory help to clarify how the feat is accomplished

By J. R. Brett

Departments

  • 50 and 100 Years Ago: August 1965

  • High-Speed Tube Transportation

  • Science and the Citizen: August 1965

  • The Royal Hemophilia

  • Letters

    Letters to the Editors, August 1965

  • Recommended

    Books

  • Mathematical Recreation

    Mathematical Games

  • Amateur Scientist

    The Amateur Scientist

  • Departments

    The Authors

  • Bibliography

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August 1965

Think Outside the Gift Box