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Earth science

How the ocean exhales

A record of biogenic opal production in the subtropical Atlantic Ocean fuels the theory that ocean circulation, rather than winds, drove the release of carbon dioxide from deep marine waters at the end of the last ice age. See Letter p.495

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Figure 1: A source of silica.



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Correspondence to Elisabeth Sikes.

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Sikes, E. How the ocean exhales. Nature 495, 454–455 (2013).

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