Scientists may have discovered a new layer within the Earth – Salon

The idea that the Earth has four layers has long been considered a basic tenet of geology, taught to schoolchildren around the globe. Think of it like an onion: First there is the crust, which is where we live and contains of water, soil and various layers of rock. Next comes the mantle, the thickest layer, which makes up 67% of the Earth’s mass. Then there is a liquid outer core, comprised mostly of iron and nickel. Finally there is an inner core, which is believed to be solid and mainly comprised…

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