What if you put a little time aside every day, could you give yourself an extra week before you die? What if you were driving your car at the speed of light and you turned on your headlights, what would happen? What if there were no such thing as gravity and a flying bird died? This book may not answer those questions, but it does consider curious and sometimes bizarre questions. You will find yourself going back to this book over and over skimming through answers to questions like, Is it possible to get your teeth so cold they would shatter when you drink hot coffee?
To find answers to these questions and others, author Randall Munroe queries computer simulations, dives into stacks of declassified military research records, solves differential equations, and consults with nuclear reactor operators. His conclusions are a treasure trove of clarity and hilarity. What if? is required reading for those with a loose imagination and a strong desire for answers.