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Features

The Shadow Market in Housing

It consists of the processes that provide housing by means other than new construction. If state and local laws gave this activity more scope, many affordable dwelling units would be available

By William C. Baer

Engineering Voyager 2's Encounter with Uranus

Difficult problems posed by vast distances, low light levels, aging equipment and mechanical breakdowns were solved by radio control trom the ground as the Voyager 2 spacecraft hurtled toward Uranus

By Richard P. Laeser, William I. McLaughlin and Donna M. Wolff

Studying the Earth by Very-Long-Baseline Interferometry

In which radio signals emitted by quasars billions of light-years a way serve as benchmarks fo r measuring the earth s wobble, tiny changes in its spin rate and the imperceptible drift of its plates

By William E. Carter and Douglas S. Robertson

RNA as an Enzyme

It was long thought that every cellular reaction is catalyzed by a protein enzyme. The discovery that RNA can cut, splice and assemble itself overturns the principle-and throws light on early evolution

By Thomas R. Cech

The Higgs Boson

It could give mathematical consistency to the standard model-the theory that describes the in teractions of fun dam en tal particles. The search for the elusive particle will require new accelerators

By Martinus J. G. Veltman

Antarctic Fishes

Most fish species perished when the Antarctic Ocean turned cold and icy, but fishes of one suborder, Notothenioidei, met the challenge. They survive by making biological antifreezes and conserving energy

By Arthur L. DeVries and Joseph T. Eastman

Features and Objects in Visual Processing

The seemingly effortless ability to perceive meaningful wholes in the visual world depends on complex processes. The features automatically extracted from a scene are assembled into objects

By Anne Treisman

Galileo and the Specter of Bruno

The two men are often honored as martyrs to science, but for Bruno astronomy was a vehicle for politics and theology. Galileo was tried partly because his aims were mistakenly identified with those of Bruno

By Edward A. Gosselin and Lawrence S. Lerner

Departments

  • 50 and 100 Years Ago: November 1986

  • Science and the Citizen, November 1986

  • Letters

    Letters to the Editors, November 1986

  • Recommended

    Books, November 1986

  • Amateur Scientist

    The Amateur Scientist, November 1986

  • Departments

    The Authors, November 1986

  • Computer Recreations, November 198

  • Bibliography, November 1986

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