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Science  11 Sep 1998:
Vol. 281, Issue 5383, pp. 1567
DOI: 10.1126/science.281.5383.1567e

Lead pollution may seem like a 20th century problem, but civilizations have been releasing this toxic metal into the air for millennia, according to a Report this week on Swiss bogs that have yielded a record of lead emissions dating to 4000 B.C. The online version of a related Perspective by Nriagu has hyperlinks to Web sites on lead in the environment and the history of lead mining.

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