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Highway Through Time | The Habitable Zone | Terraforming
Highway Through Time

Ferris Car Image The highway on your screen — marked off in one-kilometer increments — represents Earth's evolutionary history. On this five-kilometer stretch, each kilometer equals one billion years.

We've provided you with a racecar to make your journey along this Highway Through Time. To begin your journey, click on the cones along the highway. (View Shockwave Flash version.)

Highway Through Time Image