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Computers without Clocks

Computers without Clocks

Asynchronous chips improve computer performance by letting each circuit run as fast as it can

By Ivan E. Sutherland and Jo Ebergen

Combating the Terror of Terrorism

The psychological damage caused by the attacks of September 11 mirrored the physical destruction and showed that protecting the public’s mental health must be a component of the national defense...

By Ezra S. Susser, Daniel B. Herman and Barbara Aaron

The Ocean's Invisible Forest

Marine phytoplankton play a critical role in regulating the earth's climate. Could they also be used to combat global warming?

By Paul G. Falkowski
The Serious Search for an Anti-Aging Pill

The Serious Search for an Anti-Aging Pill

In government laboratories and elsewhere, scientists are seeking a drug able to prolong life and youthful vigor. Studies of caloric restriction are showing the way

By Mark A. Lane, Donald K. Ingram and George S. Roth

Saving Dying Languages

Linguists have known for years that thousands of the world ¿s languages are at grave risk of extinction. Yet only recently has the field summoned the will--and the money--to do much about it...

By W. Wayt Gibbs

Does Dark Matter Really Exist?

Ninety-five percent of the universe has gone missing. Or has it?

By Mordehai Milgrom


  • Letters


  • Errata

  • Advances

    Crop Circle Confession

  • Nuclear Reactions

  • Coherent Computing

  • From Mouth to Mind

  • A Push from Above

  • Killing the Messenger

  • Eye on the Brain

  • Stephen Jay Gould, 1941–2002

  • What Lies Beneath

  • Mechanical Reactions

  • Only the Best

  • Recommended

    Riffs on General Relativity

  • Skeptic

    Why ET Hasn't Called

  • Anti Gravity

    Poultry and Poetry

  • 50, 100 & 150 Years Ago

    50, 100 & 150 Years Ago

  • Perspectives

    A Real Pain

  • In Brief

    Data Points: August 2002

  • Brief Bits: August 2002

  • Puzzling Adventures


  • Profile

    The Billionaire Conservationist

  • Staking Claims

    Deep-Sixing the Submarine Patent

  • Innovations

    Soft Manufacturing

  • By the Numbers

    Down on the Farm

  • Technicalities

    Machine Chic

  • Working Knowledge

    Safety at a Cost

  • Departments

    Fuzzy Logic

  • Ask the Experts

    Ask the Experts: August 2002

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