Despite years of speculation, little can be said for sure about the future of the Arctic's permafrost. But that's no grounds for complacency, reports Gabrielle Walker.
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Walker, G. A world melting from the top down. Nature 446, 718–721 (2007). https://doi.org/10.1038/446718a
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DOI: https://doi.org/10.1038/446718a
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