What If?

What if a boy found a beach ball and kicked it into the ocean? What if two seals found it and began to play? What if a t... (more)

What if a boy found a beach ball and kicked it into the ocean? What if two seals found it and began to play? What if a third seal appeared on the beach looking for a friend? Enjoy this visit to the beach and the chance to guess what happens when different choices are made. (less)

"Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about s... (more)

"Millions of people visit xkcd.com each week to read Randall Munroe's iconic webcomic. His stick-figure drawings about science, technology, language, and love have a large and passionate following. 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? In pursuit of answers, Munroe runs computer simulations, pores over stacks of declassified military research memos, solves differential equations, and consults 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. The book features new and never-before-answered questions, along with updated and expanded versions of the most popular answers from the xkcd website." --Publisher summary. (less)