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Dinosaurs were the biggest, most powerful animals that ever walked the earth. Now they are all gone. How did they become extinct?--Cover p. .
What will the world be like when mankind is extinct? The pyramids may stand forever, but the cities will disappear. Our greatest masterpieces will fade and crumble. As global warming and the depletion of natural resources become ever more pressing issues it is critical to consider how we can reduce our impact on the planet. Journey to locations around the globe already going through the processes of a lack of human intervention. See the changes wrought...
This program explores Earth's age, uncovers fossils and traces evolution through the geological time periods. It also examines continental drift, studies cockroaches, early communication, and the role of mass extinctions throughout history.
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