**In the New York Times best-selling book from the creator of the
wildly popular webcomic xkcd, Randall Munroe gives hilarious and
informative answers to important questions you probably never thought to
ask.
**Fans of xkcd ask Munroe a lot of strange questions. What if you
tried to hit a baseball pitched at 90 percent the speed of light? How
fast can you hit a speed bump while driving and live? If there was a
robot apocalypse, how long would humanity last? What if everyone only
had one soulmate? What would happen if the moon went away?
In pursuit of answers, Munroe ran computer simulations, pored over
stacks of declassified military research memos, solved differential
equations, and consulted with nuclear reactor operators. His responses
are masterpieces of clarity and hilarity, complemented by signature
xkcd comics. (They often predict the complete annihilation of
humankind, or at least a really big explosion.)
Far more than a book for geeks, What If? explains the laws of science
in operation in a way that every intelligent reader will enjoy and feel
much smarter for having read