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U.S. Economic Growth

It can be enhanced by improving workers' skills, supporting research and development and encouraging investment in capital that applies technological innovations

By Ralph Landau


The name stands for small nuclear ribonucleoproteins, particles that help to remove meaningless Hintrons" from the messages issued by a cell's genes. Without them cellular activity would grind to a halt...

By Joan Argetsinger Steitz

Particle Accelerators Test Cosmological Theory

Is there a limit to the number of families of elementary particles? Debris from the big-bang origin of the universe suggests there is, and accelerators are reaching the energies required to confirm the limit...

By David N. Schramm and Gary Steigman


Many of the new high-temperature superconductors belong to a family of ceramics called perovskites. The adaptable perovskite structure gives rise to materials that have a wide array of electrical properties...

By Robert M. Hazen

Bacteria as Multicellular Organisms

They differentiate into various cell types and form highly regular colonies that appear to be gUided by sophisticated temporal and spatial control systems

By James A. Shapiro

Polynyas in the Southern Ocean

They are vast gaps in the sea ice around Antarctica. By exposing enormous areas of seawater to the frigid air, they help to drive the global heat engine that couples the ocean and the atmosphere...

By Arnold L. Gordon and Josefino C. Comiso

The Neurobiology of Feeding in Leeches

A single neurotransmitter, serotonin, orchestrates feeding behavior in the medicinal leech. The discovery may illuminate how neurochemicals control behavior in other animals

By Charles M. Lent and Michael H. Dickinson

Early Iron Smelting in Central Africa

More than 2,500 years ago the people near Lake Victoria began smelting iron in tall furnaces that produced a remarkable heat. The authors unravel the workings of this ancient technology

By Francis Van Noten and Jan Raymaekers


  • 50 and 100 Years Ago: June 1988

  • Earning its Wings

  • Yucca Mountain, Nevada

  • "Slickums"

  • Secret Science

  • Ice Storm

  • Roll Over, Wolfgang?

  • Earlier Americans

  • Quantum Holonomy

  • Compound Compound Eye

  • Love on the Fly

  • For the Birds

  • Bethesda Brain Drain

  • Nature, Nurture and Death

  • Vector Analysis

  • Richard P. Feynman 1918-1988

  • Rx: Art

  • Making Mice

  • TRON Takes Hold

  • Cold Start

  • Bottled Water?

  • Letters

    Letters to the Editors, June 1988

  • Recommended

    Books, June 1988

  • Amateur Scientist

    The Amateur Scientist, June 1988

  • Departments

    Computer Recreations, June 1988

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