Researchers at ETH Zurich have been able to demonstrate how well a mineral that can be found at the boundary between the Earth's core and mantle successfully conducts heat. This discovery led to a growing body of evidence, suggesting that the Earth is cooling faster than previously believed.
Researchers have discovered that Earth's "solid" inner core is actually a bit soft. The scientific world believed that Earth's inner core was a solid ball of compressed iron alloy which a liquid outer core covered for more than half a century. However, according to a recent study, the planetary ball's hardness varies from hard to semisoft to liquid metal.
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