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Scientists may have finally found the cause of a mysterious, crystal-forming layer that surrounds Earth's core — "leaking water" that trickles down from Earth's surface and reacts with our planet's ...

Deep beneath our feet, the Earth holds a hidden treasure trove of gold and rare metals more than 99.999% of it locked away in the planet s core. But a surprising new discovery in Hawaiian lava is ...

Add Yahoo as a preferred source to see more of our stories on Google. The slice you see cut out of the Earth reveals its core, depicted here in bright yellow. fhm/E+ via Getty Images Our Earth is ...