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Nucleic Acids and Proteins

The nucleic acid molecules inherited by the living cell bear the plan of all the cell's protein molecules. It now appears that another kind of nucleic acid plays a key role in translating the plan into protein...

By Mahlon B. Hoagland

The Proto-Castles of Sardinia

During the second and first millennia B.C. the inhabitants of Sardinia built thousands of conical stone towers. Called nuraghi, they show the influence of early Greek civilization

By Giovanni Lilliu

Body Fat

Far from being relatively inert stored material, fat tissue plays a central role in human metabolism, producing fat and constantly releasing it to be used as fuel by the working cells of the body...

By Vincent P. Dole

The Arms of the Galaxy

Astronomers have long believed that our galaxy is a giant spiral. By combining new optical techniques and radio evidence, they are now beginning to prove it

By Bart J. Bok

Computer Music

Information theory makes possible the programming of a computer to compose music. The process by which the machine does so throws light on musical structure and on the methods of human composers...

By Lejaren A. Hiller Jr.

The Flow of Matter

Everything flows, including solids such as concrete and steel. The exact way in which a material flows is of practical concern to the technologist and a difficult problem for the physicist...

By Marcus Reiner

The Physiology of the Camel

How does the camel survive for weeks without drinking? Studies in the Sahara Desert have exploded some old legends and have elucidated the animal's remarkably parsimonious water economy

By Knut Schmidt-Nielsen

Differentiation in Social Amoebae

Certain amoebae gather to form a mass of spores and a stalk. The way in which spore cells and stalk cells segregate may shed light on how the cells of many-celled organisms differentiate into various types...

By John Tyler Bonner


  • 50 and 100 Years Ago: December 1959

  • Science and the Citizen: December 1959

  • Letters

    Letters to the Editors, December 1959

  • Recommended


  • Mathematical Recreation

    Mathematical Games

  • Amateur Scientist

    The Amateur Scientist

  • Departments

    The Authors

  • Bibliography

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