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 ...

In a nutshell Scientists have solved the mystery of how earthquakes can occur 420 miles deep inside Earth, where extreme ...

A new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's ...

Deeply hidden in Earth’s mantle there are two huge ‘islands’ with the size of a continent. New research from Utrecht ...

Seismic imaging has revealed two colossal regions deep within Earth’s mantle that could reshape our understanding of the ...

At around 620 miles high, these subsurface “islands of rock” stand more than 100 times higher than Mount Everest’s summit of around 5.5 miles, ...

How's your knowledge of Earth's geology? Flat, round or global?

Scientists have discovered hidden treasures in the Earth's mantle. Hidden deep within Earth's mantle are two colossal ...

Over 25 years ago, researchers discovered that some of these deep Earth reverberations pointed to the existence of two ...

Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid, but flowing mantle, the liquid outer core and the solid iron ...

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 ...