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On the Cover

May-June 1998 Volume 86, Number 3

Counting a population can be a deceptively difficult task. In fact, even the first director of the U.S. Census, Thomas Jefferson, recognized that some persons were likely missed in the 1790 enumeration. Two centuries later, more than 4 million people went uncounted, and the net undercount was particularly high among minorities—despite promotions in numerous languages, such as a poster in Spanish and English that was adapted to form this issue's cover. ...


FEATURE ARTICLES

Sampling and Census 2000: The Concepts *

Tommy Wright

Established statistical methods can reduce net undercounting of the population if they are allowed


Speech Recognition and Sensory Integration *

Dominic Massaro, David Stork

A 240-year-old theorem helps explain how people and machines can integrate auditory and visual information to understand speech


Polyembryony in Armadillos *

W. J. Loughry,Paulo A. Prodöhl, Colleen McDonough, John Avise

An unusual feature of the female nine-banded armadillo's reproductive tract may explain why her litters consist of four genetically identical offspring


Chemical Ecology in Antarctic Seas *

James McClintock, Bill Baker

Chemical interactions can lead to unusual arrangements between species


The Formation of Star Clusters

Bruce Elmegreen, Yuri Efremov

Clouds in the summer sky provide clues about the organization of star populations


* access restricted to members and subscribers


SCIENTISTS’ BOOKSHELF

Misters Wizard

J. Ross Macdonald

A review of The Supermen: The Story of Seymour Cray and the Technical Wizards behind the Supercomputer, by Charles J. Murray.

See all book reviews for this issue.


DEPARTMENTS

COMPUTING SCIENCE

Prototeins

Brian Hayes

The knotty world of protein folding

MACROSCOPE

Biology, Society and Machines

George Bugliarello

The evolving ballet of biology, society and machines

MARGINALIA

1798: Darwin and Malthus

Keith Stewart Thomson

Did the economist's ideas influence the naturalist?

ENGINEERING

An Independent Inventor *

Henry Petroski

An appreciation of Jerome Lemelson

SCIENCE OBSERVER

New Medicine for Old Mummies

Michelle Hoffman

Diagnosing disease in some very old "patients"

FROM THE PRESIDENT


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