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Thursday, October 28, 2010 |
Thursday, October 28, 2010 |
Photo: Electrified Deep Earth Changing Length of DayMillisecond shifts in the length of Earth's days are influenced by electricity conducted by a mineral in the deep Earth, a new study says. Photograph by James P. Blair/NGS
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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