July 1998
Scientific American Magazine

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Cover; July 1998; by Staff Editor; 1 Page(s)

Table of Contents; July 1998; by Staff Editor; 2 Page(s)

From the Editors, including Masthead; July 1998; by Rennie; 1 Page(s)

All for One

Letters to the Editors; July 1998; by Staff Editor; 1 Page(s)

50, 100 and 150 Years Ago; July 1998; by Staff Editor; 1 Page(s)

In Focus: Statistical Uncertainty; July 1998; by Gibbs; 2 Page(s)

Researchers warn that continued debate over the 2000 census could doom it to failure

Inflation is Dead; Long Live Inflation; July 1998; by Musser; 2 Page(s)

How an underdense universe doesn't sink cosmic inflation

In Brief; July 1998; by Leutwyler; 3 Page(s)

Dust Impact; Endangered No More; Wishing on a Star; Sleep-Hearing; Rerouting Electric Cars; Wonder Spuds; Pretty Big Bang; Ulcers and Heart Disease; Virtual Segregation

Face Off; July 1998; by Wong; 2 Page(s)

Three-dimensional imaging stands in for fossils

Where Have all the Boys Gone?; July 1998; by Alpert; 2 Page(s)

The mysterious decline in male births

Einstein's Drag; July 1998; by Ariza; 2 Page(s)

Two satellites reveal how Earth's rotation warps space-time

Anti Gravity: Gorilla in Our Midst; July 1998; by Mirsky; 1 Page(s)

History was made in April when Koko, the signing gorilla, took part in the first live Internet "chat" between humans and another species, on America Online.

By the Numbers: The Arms Trade; July 1998; by Doyle; 1 Page(s)

The proliferation of arms to developing countries continues to be a matter of concern, despite a substantial drop in arms shipments since the mid-1980s.

Profile: Big Tobacco's Worst Nightmare; July 1998; by Gibbs; 2 Page(s)

Industry secrets exposed by Stanton A. Glantz helped to put tobacco companies on the run. Show them no mercy, he urges

Hot Coolants; July 1998; by Beardsley; 1 Page(s)

An international clampdown is planned on the black market in CFCs and other banned chemicals

Tempest in a Teacup; July 1998; by Leutwyler; 1 Page(s)

At a navy test facility, a U.S. team prepares to regain sailing's America's Cup

Getting Real?; July 1998; by Beardsley; 3 Page(s)

Synthetic emotions could make computers nicer

Tectonics in a Sandbox; July 1998; by Schneider; 1 Page(s)

Researchers model the earth's motions at small scale

Lost in Cyberspace; July 1998; by Hayashi; 1 Page(s)

Scientists look for a better way to search the Web

A New Twist in Fusion; July 1998; by Gibbs; 1 Page(s)

For the past 30 years, fusion energy researchers have been forecasting that commercially viable reactors are just a decade away.

The Mars Pathfinder Mission; July 1998; by Golombek; 10 Page(s)

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

The Split Brain Revisited; July 1998; by Gazzaniga; 6 Page(s)

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

The Single-Atom Laser; July 1998; by Feld, An; 6 Page(s)

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

Mating Strategies in Butterflies; July 1998; by Rutowski; 6 Page(s)

Butterflies meet, woo and win their mates using seductive signals and clever strategies honed by evolution

Léon Foucault; July 1998; by Tobin; 8 Page(s)

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

Defeating AIDS: What Will It Take?; July 1998; by Staff Editor; 1 Page(s)

Ten years ago, when "Scientific American" published an issue devoted to AIDS (the acquired immunodeficiency syndrome), scientists knew that the disease, first identified in 1981, was caused by HIV (the human immunodeficiency virus).

HIV 1998: The Global Picture; July 1998; by Mann, Tarantola; 2 Page(s)

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

Improving HIV Therapy; July 1998; by Bartlett, Moore; 8 Page(s)

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

How Drug Resistance Arises; July 1998; by Richman; 1 Page(s)

When anti-HIV therapy fails to keep HIV levels suppressed, the cause is often viral resistance to at least one of the drugs being administered.

Viral-Load Tests Provide Valuable Answers; July 1998; by Mellors; 1 Page(s)

In the early 1990s tests that could accurately detect the amount of HIV in a patient's blood finally became available.

When Children Harbor HIV; July 1998; by Wilfert, McKinney Jr.; 2 Page(s)

HIV infection is particularly difficult to combat in the young

Preventing HIV Infection; July 1998; by Coates, Collins; 2 Page(s)

Altering behavior is still the primary way to control the epidemic

HIV Vaccines: Prospects and Challenges; July 1998; by Baltimore; 6 Page(s)

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

Avoiding Infection After HIV Exposure; July 1998; by Buchbinder; 2 Page(s)

Treatment may reduce the chance of contracting HIV infection after a risky encounter

Coping With HIV's Ethical Dilemmas; July 1998; by Beardsley; 2 Page(s)

The issues are many and thorny

The Amateur Scientist; July 1998; by Carlson; 2 Page(s)

A Year for the Oceans

Mathematical Recreations; July 1998; by Stewart; 2 Page(s)

The Bellows Conjecture

Reviews; July 1998; by Cohen; 2 Page(s)

Reviews

Commentary: Wonders - The Sum of Human Knowledge?; July 1998; by Morrison,Morrison; 2 Page(s)

Taking stock often arises out of concern over loss.

Commentary: Connections - Heavy Stuff; July 1998; by Burke; 2 Page(s)

Hindsight always gives you 20/20 vision, doesn't it?

Working Knowledge; July 1998; by Gerpheide; 1 Page(s)

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