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Features

The Throat Singers of Tuva

Testing the limits of vocal ingenuity, throat-singers can create sounds unlike anything in ordinary speech and song--carrying two musical lines simultaneously, say, or harmonizing with a waterfall

By Theodore C. Levin and Michael E. Edgerton

Migrating Planets

Did the solar system always look the way it does now? New evidence indicates that the outer planets may have migrated to their present orbits

By Renu Malhotra

Breathing Life into Tyrannosaurus rex

By analyzing previously overlooked fossils and by taking a second look at some old finds, paleontologists are providing the first glimpses of the actual behavior of the tyrannosaurs

By Gregory M. Erickson

The Dechronization of Sam Magruder

The brute--it was a tyrannosaur-- got me by the leg. He shook me loose, tearing off the leg at the knee, and he didn't see where the rest of me fell. I tied up the stump and crawled away.

By George Gaylord Simpson

Repairing the Damaged Spinal Cord

Once little more than a futile hope, some restoration of the injured spinal cord is beginning to seem feasible

By John W. McDonald

A Case against Virtual Nuclear Testing

The U.S. Department of Energy's high-tech plan to replace nuclear testing with elaborate 3-D computer simulations is seriously flawed

By Christopher E. Paine

Scientists and Religion in America

Science and religion are engaging in more active dialogue and debate, but a survey suggests that scientists' beliefs have changed little since the 1930s, and top scientists are more atheistic than ever before

By Edward J. Larson and Larry Witham

Departments

  • The Teeth of the Tyrannosaurs

  • From the Editor

    Follow the Bouncing Planet

  • Letters

    Letters

  • Recommended

    ONE LIFE, TWO TAKES

  • Anti Gravity

    Strife after Death

  • 50, 100 & 150 Years Ago

    50, 100 and 150 Years Ago

  • In Brief

    IN BRIEF

  • Profile

    Defender of the Plant Kingdom

  • Mathematical Recreation

    Dances with Dodecahedra

  • Amateur Scientist

    Counting Atmospheric Ions

  • Science and the Citizen

    CALCULATING IMMUNITY

  • CONGO CITY

  • STRIKE ZONE

  • SKEWING THE COSMIC BELL CURVE

  • SILICONE SAFE

  • By the Numbers

    U.S. IMMIGRATION

  • Working Knowledge

    Working Knowledge on Retractable Stadium Roofs

  • Connections

    Or Maybe Not

  • Cyber View

    When Publishing Could Mean Perishing

  • Technology and Business

    ENTER ROBOTS, SLOWLY

  • NOT MAKING SCENTS

  • IN PLANE SIGHT

  • In Focus

    THE FALLOUT FROM CASSINI

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September 1999

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