Magazine
May-June 1998
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. In "Sampling and Census 2000: The Concepts," Tommy Wright explains the Census Bureau's proposal to use scientific statistical sampling to reduce the net undercount in the next decennial census.
In This Issue
- Astronomy
- Biology
- Chemistry
- Communications
- Computer
- Economics
- Engineering
- Ethics
- Evolution
- Mathematics
- Medicine
- Physics
- Policy
- Psychology
- Sociology
- Technology
Speech Recognition and Sensory Integration
Dominic Massaro, David Stork
Psychology
A 240-year-old theorem helps explain how people and machines can integrate auditory and visual information to understand speech
Polyembryony in Armadillos
Colleen McDonough, John Avise
Biology
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 B. McClintock, Bill Baker
Biology Chemistry Communications
Chemical interactions can lead to unusual arrangements between species
The Formation of Star Clusters
Yuri Efremov, Bruce Elmegreen
Astronomy
Clouds in the summer sky provide clues about the organization of star populations
