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  1. "Antarctica" roundtable Chloë Levine, Kimie Muroya, Keith Bearden & Kim Jackson + Darren Paltrowitz

    "Antarctica" roundtable Chloë Levine, Kimie Muroya, Keith Bearden & Kim Jackson + Darren Paltrowitz

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  3. Mystery solved? Sacsayhuaman, Peru: Why irregular stones were used in the ancient citadel walls.

    Mystery solved? Sacsayhuaman, Peru: Why irregular stones were used in the ancient citadel walls.

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  4. 1800s Airship Mystery with Dr. Joseph Farrell - Part 1 of 3

    1800s Airship Mystery with Dr. Joseph Farrell - Part 1 of 3

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