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Nature Photonics 3, 72–73 (1 February 2009) | doi:10.1038/nphoton.2008.275

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Geophysics To the centre of the Earth Science 322, 1529–1532 (2008) The flow of heat from the Earth's core to its surface controls convection in its mantle and plate tectonics. It is generally assumed that minerals in the lower mantle do not transfer any heat by radiation because they absorb it so strongly.