Skip to main content


Technology, Employment and U.S. Competitiveness

Technological change is essential to U.S. economic progress. To facilitate it, workers need to be more adaptable, research needs to focus more on applications and managers need to be more open-minded...

By David C. Mowery and Richard M. Cyert

Creating Superheavy Elements

Nuclei far more massive than those found in nature are stabilized by subtle quantum-mechanical effects. Experimenters have had to revise ideas of how best to synthesize them

By Gottfried Münzenberg and Peter Armbruster


The word refers to "place-dependent" interactions, which appear most strikingly in the developing embryo. Surprisingly, their study has provided a major clue to the origins of the immune system...

By Gerald M. Edelman

The Dynamic Aurora

Interactions of the earth's magnetic field and the solar wind give rise to a vast generator that powers the luminous displays. A similar process may prevail in other astrophysical phenomena...

By Syun-Ichi Akasofu

The Past and Future Amazon

The climatic history of the Amazon rain forest indicates that the ecosystem is well adapted to certain natural disturbances. Does it have the resilience to tolerate human exploitation?

By Paul A. Colinvaux

Marsupial Frogs

Some tropical frogs incubate eggs on the mother's back, often in a special pouch. Certain features of the adaptation recall pregnancy in mammals and the eggs and embryos of birds; others are unique...

By Eugenia M. del Pino

Optical Fibers in Medicine

Instruments to view internal anatomy plainly, sensors to analyze blood reliably and laser systems to perform surgery inside the body safely—all rely on fiber-optic technologies

By Abraham Katzir

Henry Norris Russell

One of the leading astronomers of his generation, Russell understood the need to place astronomy on a firm theoretical foundation; in doing so he helped to create modern astrophysics

By David H. DeVorkin


  • 50 and 100 Years Ago: May 1989

  • Aging Comes of Age

  • Cold Water on the Fire

  • Pinning Down Clouds

  • Case Proved

  • Gamma-Ray Bursts

  • Ambidextrous Universe

  • Energy Re-Energized

  • Fusion Breakthrough?

  • Quantum Cryptography

  • Playing Demigod

  • Quantum Biology

  • Balloon Trial

  • Risky Business

  • Do Bees Think?

  • Technology Transfer

  • Housing Developments

  • A Truffling Matter

  • Letters

    Letters to the Editor, May 1989

  • Recommended

    Books, May 1989

  • Amateur Scientist

    The Amateur Scientist, May 1989

  • Departments

    Computer Recreations, May 1989

  • Essay: How we Can Regain our Competitive Edge

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
Scroll To Top