What If? Serious Scientific Answers to Absurd Hypothetical Questions

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The creator of the incredibly popular webcomic xkcd presents his heavily researched answers to his fans' oddest questions, including “What if I took a swim in a spent-nuclear-fuel pool?” and “Could you build a jetpack using downward-firing machine guns?” 100,000 first printing.

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SusanMar 31, 2026
4.5 stars
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