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Features

The Dynamic Abyss

Cold currents flowing toward the Equator in the deep ocean are often agitated by powerful storms. These disturbances transport huge volumes of sediment across the ocean bottom

By Charles D. Hollister, Arthur R. M. Nowell and Peter A. Jumars

How Genes Control an Innate Behavior

The techniques of recombinant DNA are exploited to define a family of genes encoding a set of related neuropeptides whose coordinated release governs a fixed-action pattern: egg laying in a marine snail

By Richard H. Scheller and Richard Axel

Excitonic Matter

A conduction electron can combine with a positively charged hole in a semiconductor to create an exciton. Excitons in turn can form molecules and liquids, and a new phase of matter may be attainable

By James P. Wolfe and Andr Mysyrowicz

Muscle Sounds

Contracting muscle generates distinct sounds that are not heard only because the human ear is insensitive to low frequencies. Such sounds are now studied for their possible usefulness in science and medicine

By Gerald Oster

The Adaptability of the House Mouse

The reproductive abilities of this small mammal are remarkably flexible. It is for this reason that the species flourishes in a great diversity of habitats, notably those it shares with human beings

By F. H. Bronson

Florence Nightingale

She saved the lives of thousands of soldiers in the Crimea and was one of the founders of modern medical care. She was also a pioneer in the uses of social statistics and in their graphical representation

By I. Bernard Cohen

Departments

  • 50 and 100 Years Ago: March 1984

  • "No First Use" of Nuclear Weapons

  • Science and the Citizen, March 1984

  • The Descent of Hominoids and Hominids

  • Letters

    Letters to the Editors, March 1984

  • Recommended

    Books, March 1984

  • Amateur Scientist

    The Amateur Scientist, March 1984

  • Departments

    The Authors, March 1984

  • Computer Recreations, March 1984

  • Bibliography, March 1984

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