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The Culture of Poverty

Does membership in a group that has been poor for generations constitute belonging to a separate culture? A study of Puerto Ricans in both Puerto Rico and New York indicates that it does...

By Oscar Lewis

Corals as Paleontological Clocks

Banding on certain corals evidently represents annual, monthly and daily growth. Ancient corals thus provide clues to the length of the year in past eras and to changes in the earth's rotation...

By S. K. Runcorn

The Electric Automobile

Air pollution and other drawbacks inherent in the internal-combustion engine make this early kind of car seem increasingly attractive. All depends on the improvement of batteries, and here there are advances...

By George A. Hoffman

The Genetic Code: III

The central theme of molecular biology is confirmed by detailed knowledge of how the four-letter language embodied in molecules of nucleic acid controls the 20-letter language of the proteins...

By F. H. C. Crick

Solid Noble Gases

The simplest systems available for the study of a wide range of solid-state phenomena may be the crystal structures that are formed at very low temperatures by noble-gas atoms

By Gerald L. Pollack

Night Blindness

It has long been known that poor vision in dim light can be improved with vitamin A. Experiments with rats have now clarified exactly what it is the vitamin does

By John E. Dowling

The Origins of the Copernican Revolution

In trying to establish the length of the year, needed to reform the Christian calendar, Copernicus may have seen that a turning earth can solve a crucial problem that a turning sky cannot...

By Jerome R. Ravetz

The Navigation of Penguins

The Adlie penguin travels hundreds of miles from its breeding grounds over virtually featureless land and water and returns to the same nest. How it does so is investigated by experiment...

By John T. Emlen and Richard L. Penney


  • 50 and 100 Years Ago: October 1966

  • Science and the Citizen: October 1966

  • Letters

    Letters to the Editors, October 1966

  • Recommended


  • Mathematical Recreation

    Mathematical Games

  • Amateur Scientist

    The Amateur Scientist

  • Departments

    The Authors

  • Bibliography

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