Chunks of the thick crust that covered the early Earth may have dripped down into the mantle layer below, shedding light on how the Earth's interior behaved early in Earth's history.
A type of rock that often contains diamonds has been found in Antarctica — suggesting the shiny gems could also be found there — but diamond mining in the southernmost continent is impractical.
The earthquakes that struck New Zealand's South Island in 2010 and 2011, the second of which killed scores of people, weakened the crust around the ruptured fault.
A new computer model of Earth's inner core suggests a seismic-wave slowdown comes from changes in iron's strength just before the metal melts.
A new model explains how the newly born Earth's iron core formed as dribs and drabs of iron percolated inward from the planet's lower mantle.
The Earth's magnetic field is responsible for the rotation of both the inner and outer cores, new research suggests.
The heat near Earth's core flows at a slower rate than previously thought. The findings shed light on how the world's innards move and drive major events on the planet's surface.
Physicists have tentatively detected several particles that could reveal how radioactive heat inside the earth could influence earthquakes
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