An ingeniously constructed record of sunspot activity shows that the current episode is the most intense for several thousand years. But that does not let us off the anthropogenic hook of global warming.
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Reimer, P. Spots from rings. Nature 431, 1047–1048 (2004). https://doi.org/10.1038/4311047a
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DOI: https://doi.org/10.1038/4311047a
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