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Let's say that it were possible to bore a tunnel from one side of the Earth, through the center of the Earth and out the other side. If I were to jump into the tunnel on one side of the Earth, what would happen? Find out in this article.

A common misconception is that magma comes from the Earth's molten core. It really comes from the mantle, the layer between the core and the crust. Will it ever run out?

Like the members of an ill-fated rock group, the seven continents struck out on their own hundreds of millions of years ago. But what caused the breakup? And is a reunion tour in the works?

It wasn't until the 1960s that scientists developed the theory of plate tectonics.