What makes something funny? What's in empty space if it's not empty? And what came first: the chicken or the egg? These are some of life's biggest questions, and you are a daring thinker for even thinking about them! So open your mind and prepare to explore some of the biggest, boldest ideas about animals, the natural world and technology - from the ridiculously silly to the strikingly serious. Each question in this book will unlock new ways of thinking and may lead you to some intriguing answers. If you're daring enough to take on this mind-expanding challenge, then read on! Written by science communicator Holly Cave, the easy-to-understand text, intriguing mind-teasers, and incredible thought experiments make this philosophic journey unforgettably fun!