Book excerpt: How many bees does it take to make one jar of honey? How many soccer balls would fit inside a hollow Earth? How many pieces of gum would it take to stick you to a wall—and keep you there? Believe it or not, you can find out the answers to these questions yourself—using math! Combining questions from real readers like you with surprising answers, Laura Overdeck's How Many Guinea Pigs Can Fit on a Plane? proves that numbers can be fun—and that math is power.