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 ...

3. Explain that the Earth is made of three main layers: crust, mantle, and core. Draw them on the board using colored chalk. Explain that the core is divided into two layers: solid inner core and ...

The Earth has a layered structure made up of the core, the mantle and the crust. Different elements are present in different parts of the Earth’s structure. The crust is made from enormous ...

It's the thinnest of Earth's three main layers, yet humans have never drilled all the way through it. As you descend, you'd soon reach the depth of the Paris Catacombs, the deepest metro station ...

What’s in a word? Well, if it’s the word dirt or soil, it turns out, it’s a lot. While most people, myself included, often ...