Magazine
January-February 1999
January-February 1999
Volume: 87 Number: 1
Soils contaminated with lead are the legacy of decades of use of lead additives in gasoline and paints. In many of America's inner cities, soil lead is most concentrated where children are apt to play—in the yards and play areas around their houses, particularly if those houses are near heavy automobile traffic. Lead poisoning has been a danger to children for years, even in the 1940s, when the cover photo was taken in New York City, but only fairly recently have policies been enacted to limit childhood exposure to lead in paints. The greater risk to children of lead in soils, says Howard W. Mielke in "Lead in the Inner Cities," has yet to be dealt with effectively by policy makers. (AP/Wide World Photos)
In This Issue
- Agriculture
- Astronomy
- Biology
- Chemistry
- Communications
- Computer
- Engineering
- Environment
- Evolution
- Medicine
- Physics
- Policy
- Psychology
- Sociology
- Technology
Foraging by Seabirds on an Olfactory Landscape
Gabrielle A Nevitt
Biology Chemistry
The seemingly featureless ocean surface may present olfactory cues that help the wide-ranging petrels and albatrosses pinpoint food sources
Knowledge Discovery and Data Mining
Carla Brodley, Terran Lane, Timothy Stough
Computer Technology
Computers taught to discern patterns, detect anomalies and apply decision algorithms can help secure computer systems and find volcanoes on Venus
Rocks at the Mars Pathfinder Landing Site
Scott Murchie
Astronomy Chemistry Physics
Chemical analyses and spectral images of Martian boulders allow inferences about their origins
Molecular Conservation Genetics
Mary V. Ashley
Biology
Tools for assaying the structure of DNA prove valuable in protecting endangered species
