Steven Shirey

Five key questions in cosmochemistry and geochemistry

Starry night above the Earth

The chemical signatures of rock and space dust hold clues to the deep histories of our planet, Solar System, and life itself—if you know where to look.

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What causes the deep Earth’s most mysterious earthquakes?

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The cause of Earth’s deepest earthquakes has been a mystery to science for more than a century, but a team of Carnegie scientists may have cracked the case.

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