What If?

Randall Munroe's 2014 book — answering absurd hypothetical science questions (What if everyone on Earth jumped at once? What if a baseball traveled at 90% of the speed of light?) with rigorous scientific calculation — the most entertaining science education book.

Creates the extreme-hypothetical science education format — What If? demonstrates that rigorous scientific calculation applied to absurd hypotheticals is both entertaining and educational; the format teaches scientific reasoning by showing how to set up and bound calculations.