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Science 15 August 2008:
Vol. 321. no. 5891, pp. 923 - 924
DOI: 10.1126/science.1162870
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Perspectives

OCEAN SCIENCE:
Ironing Out Ocean Chemistry at the Dawn of Animal Life

Timothy W. Lyons

New data change the picture of how the iron, oxygen, and sulfur contents of the ocean evolved.

Department of Earth Sciences, University of California, Riverside, CA 92521, USA. E-mail: timothy.lyons{at}ucr.edu

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