October 23, 2021

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Earth’s core is growing ‘lopsided’ and scientists don’t know why

4 min read

There’s a mystery brewing at the center of the Earth.

Scientists can only see it when they study the seismic waves (subterranean tremors generated by earthquakes) passing through the planet’s solid iron inner core. For some reason, waves move through the core significantly faster when they’re traveling between the north and south poles than when they’re traveling across the equator.

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