Oxygen a Bit Player in Earth’s Outer Core

Oxygen a Bit Player in Earth’s Outer Core

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Oxygen makes up a smaller percentage of the core than scientists had thought, suggests a study in Nature. Knowing the core’s contents helps researchers better understand how Earth clumped together 4.5 billion years ago, says co-author Yingwei Fei, a geochemist at the Carnegie Institution for Science in Washington, D.C.

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