Episode Details

Earth’s core may be cooling twice as fast as scientists once thought — and that could reshape our understanding of planetary evolution. New lab experiments on key minerals like bridgmanite reveal faster heat loss from the inner and outer core boundary, which powers Earth’s magnetic shield. This accelerated cooling could influence plate tectonics and long-term geological activity, with ripple effects for how other rocky planets might develop. The findings hint at a deeper, hotter past — and a future shaped by the planet’s hidden heat engine.

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