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Season 5, episode 14. This player now records resume state for the active profile so browse, account, and detail pages can bring you back here quickly.
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Erosion
Dirt, sand, and rock from the Earth’s surface gets blown, sliced, torn, swallowed and distributed all over the world. What was yesterday’s hill is tomorrow’s flat plain. The planet looks a lot different than it did when it formed four and a half billion years ago. The force of erosion, the slow wearing away of the land, has never ceased.
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