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Vast ‘doughnut’ discovered in molten metal of Earth’s core – The Guardian

Vast ‘doughnut’ discovered in molten metal of Earth’s core  The GuardianDoughnut-shaped region found inside Earth’s core deepens understanding of planet’s magnetic field  Phys.orgScientists Discover Hidden ‘Doughnut’ in Earth’s Core  NewsweekA doughnut inside Earth provides clues to the planet’s magnetic field  Cosmos