<ul><li>The Earth’s inner core is a hot, solid iron-rich alloy surrounded by a cooler, liquid outer core.</li><li>Convection and rotation in the outer core generate magnetic fields that can affect the flow of liquid metal inside the Earth.</li><li>Common models for planetary flows simplify this feedback mechanism, neglecting the impact of flow-induced magnetic fields on the flow.</li><li>A recent experiment involving a rotating tank filled with a magnetically-active fluid demonstrated that magnetic fields can cause flow across traditionally assumed boundaries.</li></ul>

How Magnetic Fields Shape Core Flows

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