Marine algae known as coccolithophores produce much of the ocean's calcium carbonate. A large survey reveals how these organisms' calcification processes and species distribution change in response to carbon dioxide levels. See Letter p.80
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Hutchins, D. Forecasting the rain ratio. Nature 476, 41–42 (2011). https://doi.org/10.1038/476041a
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DOI: https://doi.org/10.1038/476041a