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Features

The Tomb of Antiochus I

On a mountaintop in Turkey stands one of the most remarkable monuments of ancient times. Built during the first century B. C. by the king of Kommagene, it is a link between the East and West

By Friedrich Karl Doerner and Theresa Goell

The Radio Sky

If our eyes were sensitive to radio waves rather than to light waves, we would have an entirely different view of the heavens. Presenting the panorama of the sky "seen" by a radio telescope

By John D. Kraus

The Atomic Nucleus

Its structure, when examined with beams of high-energy electrons, is characterized by a fuzzy "skin," the density of Which decreases from the inside out. Even individual protons have this construction

By Robert Hofstadter

Space Perception in the Chick

In which the sight of newborn chicks is manipulated with tiny hoods to determine whether the ability of the birds to locate objects is learned, innate or due to the process of maturation

By Eckhard H. Hess

Sexuality in Bacteria

It has only recently been shown that bacteria have chromosomes and genes. Now it has been found that one bacterium can inject its genes into another by conjugation, giving rise to a hybrid

By Elie L. Wollman and Franois Jacob

Progress in Solar Power

Although there are many ways to convert the energy of the sun into useful forms, most of them are uneconomic. The emphasis is now on devices simple and cheap enough to repay their cost

By Harry Tabor

Paleobiochemistry

Until recently it was believed that ancient bones and shells contained none of their original organic substance. Now amino acids have been found in fossils as old as 300 million years

By Philip H. Abelson

A Study of Values

In the same semi-arid region of western New Mexico the people of five entirely different cultures lead different lives. A long-term study seeks the connections between their values and their ways of life

By Evon Z. Vogt and John M. Roberts

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