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 ...

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 ...

New research is reshaping how scientists understand the earliest days of Earth’s formation—suggesting that the deep interior ...

Establishing a direct link between Earth's interior dynamics occurring within the first 100 ... "This study is the first to ...