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 ...

First, I’m going to find out which half of the Earth he’s on. Running around the middle of the planet is an imaginary line called the Equator. Well I’m on the half that’s above the Equator ...

Beneath the American Midwest, on the continent of North America, the underside of Earth's crust is dripping into the ...