A decade of modelling Earth's core on computers has led to the belief that we understand what produces Earth's magnetic field. More realistic simulations are now shaking that complacency.
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Christensen, U. A sheet-metal geodynamo. Nature 454, 1058–1059 (2008). https://doi.org/10.1038/4541058a
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DOI: https://doi.org/10.1038/4541058a
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