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Frozen Earth

Imagine a strange dark force pulling Earth out of its orbit around the sun, drifting into the outer reaches of space, our world thrown into the dark and cold in the face of an eternal ice age. That's the scenario scientists are examining in this episode of How to Survive the End of the World. Leading minds in physics and the space sciences come together to predict what might happen in the event of a true Armageddon and forecast human survival in this all-too-real scenario.