On the Cover
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. ...
FEATURE ARTICLES
Howard Mielke
Policies to reduce children's exposure to lead may be overlooking a major source of lead in the environment
Gabrielle Nevitt
The seemingly featureless ocean surface may present olfactory cues that help the wide-ranging petrels and albatrosses pinpoint food sources
Carla Brodley, Terran Lane, Timothy Stough
Computers taught to discern patterns, detect anomalies and apply decision algorithms can help secure computer systems and find volcanoes on Venus
Harry Y. McSween,Jr., Scott Murchie
Chemical analyses and spectral images of Martian boulders allow inferences about their origins
Mary Ashley
Tools for assaying the structure of DNA prove valuable in protecting endangered species
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