Earth's core lightens up

The movement of oxygen and sulphur at the heart of the planet may drive its magnetic field.

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Helffrich, G. & Kaneshima, S. Nature 468, 807-810 (2010).
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Geoff Brumfiel
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Brumfiel, G. Earth's core lightens up. Nature (2010). https://doi.org/10.1038/news.2010.657