What If? 2 is a popular science and humour book that explores unusual hypothetical questions submitted by readers. Randall Munroe, former NASA engineer and creator of xkcd, uses real scientific principles to explain what would happen in extreme or absurd situations.
The book covers a wide range of imaginative scenarios, such as large-scale engineering problems, space-related questions, and everyday curiosities taken to their logical extremes. Each answer combines physics, mathematics, and clear explanations with humour and illustrations to make complex ideas accessible and entertaining.
Rather than simply providing answers, the book demonstrates how scientific thinking can be applied to almost any question, no matter how strange. It encourages curiosity and critical thinking while making learning enjoyable.
What If? 2 is widely regarded in popular science literature. It is ideal for readers who enjoy science explained through humour, creative problem-solving, and thought-provoking questions, offering an entertaining and educational exploration of “what would happen if…” scenarios.