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Geochemistry

Chemists journey to the center of the Earth

The chemistry of the core drives our planet’s magnetic field and holds clues about Earth’s history. Geochemists are going to extremes to understand it

by Katherine Bourzac
October 2, 2022 | A version of this story appeared in Volume 100, Issue 35
Brightly colored illustration showing Earth cut in half to reveal distinct interior layers.

Credit: Johan Swanepoel/Science Source | The nature of Earth's interior has long fascinated scientists.

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