The Universe

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The Universe: Worst Days On Planet Earth
Worst Days On Planet Earth
Season 6  |  Episode 5  |  The History Channel  |  May 23, 2012

Earth may seem like the most hospitable planet in the solar system. But look again. Startling new discoveries reveal the blue planet has been plagued by more chaos and destruction than scientists once imagined.

Earth may seem like the most hospitable planet in the solar system. But look again. Startling new discoveries reveal the blue planet has been plagued by more chaos and destruction than scientists once imagined.

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