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Features

The Economic Growth of Japan

The Japanese economy is now the third largest, and its growth rate approaches 15 percent per year. If present trends continue, Japan will be the world's most affluent nation by the end of the century

By James C. Abegglen

The Lunar Laser Reflector

A reflector array placed on the moon by its first visitors returns pulses of light emitted by lasers on the earth. The round-trip travel time yields the distance to the moon with an accuracy of six inches

By E. Joseph Wampler and James E. Faller

An Early Farming Village in Turkey

Çayönü Tepesi, a site in a little-studied part of Asia Minor, adds to the growing record of man's agricultural origins. Also revealed there is the earliest evidence of man's use of metal

By Robert J. Braidwood and Halet Cambel

The Functional Organization of the Brain

The sensory and motor functions of the human brain are well localized, but more complex functions such as speech and writing remain obscure. Injuries to the brain provide clues to how such systems are organized

By A. R. Luria

Inertial Navigation for Aircraft

This highly precise and automatic system of navigation, developed originally for military applications and space flight, is now being introduced to commercial aviation

By Cornelius T. Leondes

How an Eggshell is made

Eggshell is largely crystalline calcium carbonate. The calcium comes partly from the hen's bones, and when necessary the hen can mobilize 10 percent of her bone for this purpose in a day

By T. G. Taylor

Genetic Load

The term refers to the accumulated mutations in the gene pool of an entire species. Part of the load reduces the viability of the species; the rest may be a priceless genetic resource

By Christopher Wills

Monomolecular Layers and Light

Multilayer systems of long-chain fatty-acid molecules and fluorescent dye molecules are used to study the structure of light waves, revealing a close analogy between a radio antenna and a light-emitting molecule

By Karl H. Drexhage

Departments

  • 50 and 100 Years Ago: March 1970

  • Science and the Citizen: March 1970

  • Letters

    Letters to the Editors, March 1970

  • Recommended

    Books

  • Mathematical Recreation

    Mathematical Games

  • Amateur Scientist

    The Amateur Scientist

  • Departments

    The Authors

  • Bibliography

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