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Extras

    Video thumbnail: NOVA A Cathedral of Ice

    NOVA

    A Cathedral of Ice

    A scientist dives beneath the surface of the frigid Antarctic ice sheet.

    A Cathedral of Ice

    Video thumbnail: NOVA Mystery Beneath the Ice Preview

    NOVA

    Mystery Beneath the Ice Preview

    What’s behind the death of a tiny creature with an outsized role in the Antarctic?

    Mystery Beneath the Ice Preview

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