53 pages • 1-hour read
Randall MunroeA modern alternative to SparkNotes and CliffsNotes, SuperSummary offers high-quality Study Guides with detailed chapter summaries and analysis of major themes, characters, and more.
The Making of the Atomic Bomb by Richard Rhodes (1987)
This book by historian Richard Rhodes reads like a novel describing the history of creating the world’s most powerful military weapon. Atom bombs feature prominently in What If?, often as comparisons for the amount of energy released in events imagined by the author to illustrate his explanations of physics principles.
The World Without Us by Alan Weisman (2007)
Chapter 12, about electric light sources persisting after humans disappear, mentions The World Without Us, in which author Alan Weisman thoroughly explores “what would happen to Earth’s houses, roads, skyscrapers, farms, and animals if humans suddenly vanished.”
The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table by Sam Kean (2010)
This book describes the history of nearly every atomic element’s discovery, its uses, and interesting and unusual facts about each.
The Body: A Guide for Occupants by Bill Bryson (2019)
This best-selling book by author and educator Bill Bryson is a compendium of odd and interesting facts about the human body.
xkcd by Randall Munroe
The illustrations in What If? derive from the author’s award-winning web comic. The radiation chart Munroe created after the Fukushima nuclear disaster—which was used by news outlets worldwide—is available here.
What If? by Randall Munroe
The book What If? is a best-of publication drawn from the author’s weblog, also called What If? New questions and answers are posted weekly.
“Beyond Manhatta” by Welikia
Chapter 5 discusses what New York City’s landscape was like centuries ago. The author notes: “The interactive map, available online at Welikia.org, is a fantastic snapshot of a different New York. In 1609, the island of Manhattan was part of a landscape of rolling hills, marshes, woodlands, lakes, and rivers” (16).



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