Extreme conditions deep in Earth's interior recreated

A new study sheds light on the inner workings of the Earth's deep interior by uncovering the structure of a substance called post-perovskite, which makes up most of the core-mantle 1,800 miles below the surface. Understanding how this region behaves has important implications for discovering how the planet's internal heating and cooling processes work, and gives clues about the longstanding mystery of why certain seismic waves travel more quickly through this layer.

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