A long time ago (way long), all of the earth's continents were squished
together—one supercontinent and one superocean. You could
basically walk from South America into Africa, or from Africa into Australia.
If you want to try that today, you'd better buy some fins—you're in for the
swim of a lifetime.
Cool huh? Yeah. But what's really cool is that it's not over yet. Even as you
read this, whole continents are moving. Right? Click here and see.