Conel Alexander

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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Where did Earth's water come from?

A blue ocean of water

As a part of this month's geochemistry/cosmochemistry, Staff Scientist Conel Alexander explains where Earth's water comes from. 

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