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  3. What If the Megalodon Shark Never Went Extinct?

    What If the Megalodon Shark Never Went Extinct?

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  4. What If You Were Caught in a Riptide?

    What If You Were Caught in a Riptide?

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  5. What If All Helium Disappeared for 5 Seconds?

    What If All Helium Disappeared for 5 Seconds?

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  6. Have Historians Discovered a Secret Civilization in the Amazon?

    Have Historians Discovered a Secret Civilization in the Amazon?

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  7. What If You Fell Into Jupiter?

    What If You Fell Into Jupiter?

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  8. What If All of Antarctica's Ice Suddenly Melted?

    What If All of Antarctica's Ice Suddenly Melted?

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  9. What If Earth Was a Pulsar Planet?

    What If Earth Was a Pulsar Planet?

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  10. What If You Visited the Galaxy’s Most Dangerous Planet?

    What If You Visited the Galaxy’s Most Dangerous Planet?

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