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Kevin Zahnle
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Kevin Zahnle: Kevin Zahnle is at the NASA Ames Research Center, Moffett Field, California 94035, USA. kevin.j.zahnle@nasa.gov

Nature, 2008, vol. 454, issue 7200, 41-42

Abstract: A glitch in the history of sulphur isotopes could imply that methane emitted by the ancient biosphere created a high-altitude photochemical smog, which governed the climate in a distinctly Gaian way.

Date: 2008
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DOI: 10.1038/454041a

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