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On the Cover

May-June 2002 Volume 90, Number 3

In this computer-generated scene, our perception of a color changes with different backgrounds. Specifically, the blue circle surrounded by yellow ones looks darker than the blue circle surrounded by green ones, which in turn looks darker than the blue circle largely in shadow. ...


FEATURE ARTICLES

Traffic Crashes *

Leonard Evans

Measures to make traffic safer are most effective when they weigh the relative importance of factors such as automotive engineering and driver behavior


The Global Transport of Dust *

Dale Griffin, Christina Kellogg, Virginia Garrison, Eugene Shinn

An intercontinental river of dust, microorganisms and toxic chemicals flows through the Earth's atmosphere


Hybridization and Extinction *

Donald Levin

In protecting rare species, conservationists should consider the dangers of interbreeding, which compound the more well-known threats to wildlife


Quantum Identity *

Peter Pesic

Physicists have long struggled with the weirdness of quantum mechanics—a consequence of like particles being completely indistinguishable from one another


Why We See What We Do

R. Beau Lotto, Dale Purves, Surajit Nundy

A probabilistic strategy based on past experience explains the remarkable difference between what we see and physical reality


* access restricted to members and subscribers


SCIENTISTS’ BOOKSHELF

To Test or Not to Test

Rachel Ankeny

A review of Future Perfect: Confronting Decisions about Genetics, by Lori B. Andrews

See all book reviews for this issue.


DEPARTMENTS

COMPUTING SCIENCE

Terabyte Territory

Brian Hayes

The evolution of the disk drive

MACROSCOPE

Prince Kropotkin's Ghost

Melanie Killen, Marina Cords

A child psychologist and a primatologist forge a fruitful partnership

MARGINALIA

Dinosaurs, the Media and Andy Warhol

Keith Stewart Thomson

How the lure of publicity can lead to hyperboleand worse

ENGINEERING

Delivering Papers *

Henry Petroski

Technology, innovation and the newspaper delivery boy

SCIENCE OBSERVER

High on Fidelity

Marla Vacek Broadfoot

What can voles teach us about monogamy?

Science that Stinks

Rebecca Sloan Slotnick

The Pentagon's search for the ultimate stink bomb

Clickworkers on Mars

Michael Szpir

NASA enlists the nation's eyes to study crater data

FROM THE PRESIDENT


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