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Hunger in the U.S.

Virtually eliminated in the 1970's, this blight has returned because of Federal cutbacks. By a common definition of hunger some 12 million children and eight million adults are hungry

By J. Larry Brown

The Microtubule as an Intracellular Engine

Microtubules have become familiar elements in the frameworks that organize cell shape and cell division. Now a powerful new technique in light microscopy has revealed their function in two-way transport...

By Robert Day Allen

The Oldest Pulsars in the Universe

These unusual pulsars are dense, compact stars spinning at the rate of several hundred revolutions per second. Why do they spin so fast? They are thought to have been resurrected from an early death...

By Jacob Shaham

Genetic Recombination

Before an organism reproduces it often reshuffles its genetic information. Chromosomes trade parts in a recombination process whose molecular intricacies are now being unraveled

By Franklin W. Stahl

Ballistic Electrons in Semiconductors

Devices in which electrons carry current without being scattered promise to be much faster than present-day components. They also allow close study of the electron's quantum-mechanical properties...

By Mordehai Heiblum and Lester F. Eastman

Whales and Walruses as Tillers of the Sea Floor

As gray whales and Pacific walruses gather food from the bottom of the northeastern Bering Sea they produce pits and furrows to a degree that rivals the disturbances caused by geologic processes...

By Kirk R. Johnson and C. Hans Nelson

Marriage, Motherhood and Research Performance in Science

Women publish less than men, but marriage and family obligations do not generally account for the gender difference. Married women with children publish as much as their single female colleagues do...

By Jonathan R. Cole and Harriet Zuckerman

The Computer as a Musical Instrument

If a computer generates the right sequence of numbers, any sound—including some never before heard—can be produced. Because of its versatility, such digital sound synthesis has found a place in music...

By Max V. Mathews and John R. Pierce


  • 50 and 100 Years Ago: February 1987

  • Science and the Citizen, February 1987

  • Letters

    Letters to the Editors, 1987

  • Recommended

    Books, February 1987

  • Amateur Scientist

    The Amateur Scientist, February 1987

  • Departments

    The Authors, February 1987

  • Computer Recreations, February 1987

  • Bibliography, February 1987

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