Study may solve age-old mystery of missing chemicals from Earth's mantle

Observations about the early formation of Earth may answer an age-old question about why the planet’s mantle is missing some of the matter that should be present, according to UBC geophysicist John Hernlund.

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<p><a href="http://www.physorg.com/news116082729.html">Study may solve age-old mystery of missing chemicals from Earth's mantle</a></p> <p>Observations about the early formation of Earth may answer an age-old question about why the planet’s mantle is missing some of the matter that should be present, according to UBC geophysicist John Hernlund.</p>