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  2. Graham Hancock: Did A Global Catastrophe Wipe Out An Advanced Civilization 12,000 Years Ago?

    Graham Hancock: Did A Global Catastrophe Wipe Out An Advanced Civilization 12,000 Years Ago?

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  3. Episode 2 Civilization and the Younger Dryas Impact Hypothesis

    Episode 2 Civilization and the Younger Dryas Impact Hypothesis

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