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Features

The Mars Pathfinder Mission

Last summer the first ever Mars rover found in situ evidence that the Red Planet may once have been hospitable to life

By Matthew P. Golombek

The Split Brain Revisited

Groundbreaking work that began more than a quarter of a century ago has led to ongoing insights about brain organization and consciousness

By Michael S. Gazzaniga

The Single-Atom Laser

A new type of laser that harnesses the energy of individual atoms reveals how light interacts with matter

By Michael S. Feld and Kyungwon An

Léon Foucault

Celebrated for his pendulum experiment in 1851, Foucault also produced decisive evidence against the particle theory of light, invented the gyroscope, perfected the reflecting telescope and measured the sun's distance

By William Tobin

Defeating AIDS: What Will It Take?

HIV 1998: The Global Picture

Worldwide, the populations most affected by the AIDS virus are often the least empowered to confront it effectively

By Jonathan M. Mann and Daniel J. M. Tarantola

Improving HIV Therapy

Today's optimal treatments can work magic, but they are costly and onerous and do not work for everyone. What might the future bring?

By John G. Bartlett and Richard D. Moore

How Drug Resistance Arises

By Douglas D. Richman

Viral-Load Tests Provide Valuable Answers

By John W. Mellors

When Children Harbor HIV

HIV infection is particularly difficult to combat in the young

By Catherine M. Wilfert and Ross E. McKinney

Preventing HIV Infection

Altering behavior is still the primary way to control the epidemic

By Thomas J. Coates and Chris Collins

HIV Vaccines: Prospects and Challenges

Unlike vaccines for many viruses, those for HIV may have to go beyond generating antibodies. Devising approaches that will fully activate the immune system is far from simple

By David Baltimore and Carole Heilman

Departments

  • Mating Strategies in Butterflies

  • Avoiding Infection after HIV Exposure

  • From the Editor

    All for One

  • Letters

    Errata

  • Letters to the Editors, July 1998

  • Recommended

    Reviews and Commentaries--Thinking About Thinking

  • Anti Gravity

    Gorilla in Our Midst

  • 50, 100 & 150 Years Ago

    50, 100 and 150 Years Ago: Antiquity of Man , Fear and Salmon of Oregon

  • Wonders

    The Sum of Human Knowledge?

  • In Brief

    In Brief

  • Fact or Fiction

    Coping with HIV's Ethical Dilemmas

  • Profile

    Big Tobacco's Worst Nightmare

  • Mathematical Recreation

    The Bellows Conjecture

  • Amateur Scientist

    A Year for the Oceans

  • Science and the Citizen

    Inflation is Dead; Long Live Inflation

  • Face Off

  • Where Have All the Boys Gone?

  • Einstein's Drag

  • By the Numbers

    The Arms Trade

  • Working Knowledge

    Touchpad Pointing Device--Working Knowledge

  • Connections

    Heavy Stuff

  • Field Notes

    Tempest in a Teacup

  • Technology and Business

    Hot Coolants

  • Getting Real?

  • Tectonics in A Sandbox

  • A New Twist in Fusion

  • Lost in Cyberspace

  • In Focus

    Statistical Uncertainty

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July 1998

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