Article: Air pollution: Illegal aliens.(transportation of air pollution)(Brief Article)

SAN FRANCISCO

The American Geophysical Union's meeting in San Francisco discussed many topics. Not all were solely American, nor even strictly geophysical

POLLUTION is no respecter of national boundaries. But meteorologists can still be surprised by the distances that large quantities of airborne crud are sometimes able to travel. The past week's American Geophysical Union meeting examined two recent incidents-one involving industrial pollutants, the other natural dust-where the crud reached the west coast of America all the way from Asia. Researchers are keen to understand how such events happen, and thus how they might be forecast.

Dan ...

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