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Earth sciences

Ups and downs of ancient oxygen

Nature volume 443, pages 643645 (12 October 2006) | Download Citation

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The latest models suggest that atmospheric oxygen could have fluctuated between high and low concentrations once photosynthesis had evolved. But does the geological evidence really support this?

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Author information

Affiliations

  1. James F. Kasting is in the Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802  kasting@essc.psu.edu

    • James F. Kasting

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DOI

https://doi.org/10.1038/443643a

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