The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...

To learn why, where, and how earthquakes happen, you need to familiarize your students with the interior of the Earth and a model called plate tectonics. The engine behind the earthquake machine ...

Many geologists attribute the great variation in the temperature gradient to complex irregularities in the structure of the earth's crust. Some even maintain that the interior of the earth is cold ...

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How do scientists explore Earth's hidden interior — its crust, mantle, and core? The answer lies in earthquake waves. Like X-rays, these seismic waves travel through and reflect off internal ...

Recent discoveries offer deeper insight into the movement of tectonic plates. New research has found that variations in rock ...

Interior Secretary Doug Burgum discusses mining of rare earth materials in the United States, the threat of China and more on ‘Fox News Sunday.’ ...

Establishing a direct link between the Earth's interior dynamics occurring within the first 100 million years of its history and its present-day structure, the work is one of the first in the ...

Columnist Joan Brickner writes about Secretary of Interior Doug Burgum's efforts to push coal and talk of using federal land ...

Columnist David Lauderdale revisits a story of environmental activism in 1970 in South Carolina’s Lowcountry ahead of the 55th annual Earth Day.