Earth's inner core may be reversing its rotation, study suggests

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According to a study published on January 23 in "Nature Geoscience," our planet's inner core, made up largely of iron and molten liquids, may be reversing after it temporarily stopped rotating. Researchers from Peking University think it could be part of a 70-year cycle, with the inner core changing direction every 35 years, possibly affecting Earth's magnetic field and the length of days.