Earth has multiple layers: the crust, the mantle, the liquid outer core and the solid inner core.
(Image credit: NASA)
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'Superdeep' Diamonds Hint at Depth of Carbon CycleDiamonds suggest carbon travels much deeper into Earth's interior than previously though.
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Asteroids May Have Brought Precious Metals to EarthClears up why precious metals found near surface instead of core.
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Earth's Surface 'Recycled' Surprisingly QuicklyOceanic crust melts into mantle, spewed back up by volcanoes.
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Ancient Source of Earth's Biggest Eruptions FoundSuper-plumes of molten material deep inside Earth shot to surface.
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Diamonds Sparkle with Clues About Early Earth -
Source of Hawaii Volcanism FoundPlume from mantle wasn't where it was expected.
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3-D Images Reveal How Earth's Crust FormsImages give insight into how lava erupts from deep-sea ridges.
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Journey to the Earth's Mantle to Go Deeper than Ever BeforeScientists return to idea of drilling in to Earth's hot mantle.
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First Measurement of Earth's Inner Magnetism MadeGeophysics milestone may point to source of the inner planet's roiling energy.
