In this diagram, the red lines represent the edges of the tectonic plates that make up the Earth's crust. For example, iron is mined from the Earth's crust in quarries. It is a finite resource ...

Earth is made out of different layers, and those layers get hotter and more pressurized the deeper you go. The first layer is the crust, a thin outer shell that extends about 18 miles (30 km ...

Earth's crust may "drip" into its middle layer under growing mountain ranges. This odd process, called lithospheric dripping, ...