This swirling marble is really a view of the inside of the Earth - made with earthquakes

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This swirling marble is really a view of the inside of the Earth - made with earthquakes http://t.co/r5q0Dm4CVe http://t.co/OGpx4gqzxl

by :New Scientist
at :Mon Mar 16 17:08:18 +0000 2015

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