What If?: Serious Scientific Answers to Absurd Hypothetical Questions

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From the creator of the wildly popular webcomic xkcd, hilarious and informative answers to important questions you probably never thought to ask. Millions of people visit xkcd.com each week to read Randall Munroe?s iconic webcomic. His stick-figure drawings about science, technology, language, and love have a large and passionate following.
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