What if? additional serious scientific answers to absurd hypothetical questions / 2 :

In this sequel, Randall Munroe answers more ridiculous “hypothetical” questions. As in the original book, Munroe, famously the creator of the xkcd comic, takes submitted science-themed and generally absurd questions from the public, and provides seriously researched, often taken to the extreme, answers. He includes illustrations in his xkcd style for added zestiness. The result is a fascinating read that ranges across the physical sciences.