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Science 25 March 2005:
Vol. 307. no. 5717, pp. 1858 - 1861
DOI: 10.1126/science.307.5717.1858a
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News Focus

EPIDEMIOLOGY:
Mounting Evidence Indicts Fine-Particle Pollution

Jocelyn Kaiser

Particle air pollution clearly causes substantial deaths and illness, but what makes fine particles so toxic--the size, the chemical compound, or both?

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Science. ISSN 0036-8075 (print), 1095-9203 (online)