xkcd Figures Out What Would Happen to the Earth If All of the Bodies of Water Were to Suddenly VanishJuly 7, 2014
xkcd Figures Out How Many Snowflakes It Would Take to Cover the World in Six Feet of SnowJuly 11, 2014
What If?: Serious Scientific Answers to Absurd Hypothetical Questions, A Book Based on xkcd’s Blog ‘What If?’March 12, 2014