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Features

Alternative Automobile Engines

Requirements for cleaner and more efficient engines have stimulated a search for alternatives to the conventional spark-ignition engine. So far the defects of the alternative engines are clearer than the virtues

By David Gordon Wilson

The Highest-Energy Cosmic Rays

A small number of fast particles from space are more energetic than the particles produced by the largest man-made accelerators. They are revealed by the showers of other particles they create in the air

By John Linsley

Nighttime Images of the Earth from Space

An unusual aspect of the earth is revealed in pictures recorded at midnight by U.S. Air Force weather satellites. The brightest lights on the dark side of the planet are giant waste-gas flares

By Thomas A. Croft

Learning and Memory in Bees

A bee is able to learn quickly and to remember for long periods the color and the odor of flowers that yield nectar or pollen. Now the neural basis of this programmed behavior is being elucidated

By Jochen Erber and Randolf Menzel

Synthetic-Membrane Technology

Thin films of cross-linked polymers can separate molecules according to size, charge or other properties. The synthetic membranes can be applied to such industrial tasks as waste treatment and desalination

By Charles D. Gregor and Harry P. Gregor

The Kiwi

New Zealand, where this flightless bird lives today, had no mammals for 80 million years. In filling ecological niches that would have been occupied by the mammals the bird evolved mammalian characteristics

By William A. Calder

Computer Poker

The familiar card game has interested mathematicians, economists and psychologists as a model of decision-making in the real world. It is now serving as a vehicle for investigations in computer science

By Nicholas V. Findler

Departments

  • 50 and 100 Years Ago, July 1978

  • The Chemical Differentiation of Nerve Cells

  • Science and the Citizen, July 1978

  • Letters

    Letters to the Editors, July 1978

  • Recommended

    Books, July 1978

  • Mathematical Recreation

    Mathematical Games, July 1978

  • Amateur Scientist

    The Amateur Scientist, July 1978

  • Departments

    The Authors, July 1978

  • Bibliography, July 1978

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July 1978

See the World from a Different Perspective

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