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  1. What If You Lived in the Stone Age?

    What If You Lived in the Stone Age?

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    18
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  2. What If All the Planets Doubled in Size?

    What If All the Planets Doubled in Size?

    36
  4. What If Latin America Was a Single Country?

    What If Latin America Was a Single Country?

    5
  5. What If We Entered a New Ice Age?

    What If We Entered a New Ice Age?

    18
  6. What If You Drank Radioactive Tritium?

    What If You Drank Radioactive Tritium?

    11
  7. What If We Destroyed a Black Hole?

    What If We Destroyed a Black Hole?

    16