The definitive and stunningly illustrated question and answer book from Britannica, with answers to more than 100 questions that kids really want to know. Why do elephants have trunks? Why are clouds different shapes? Why does popcorn pop? Why does my tummy rumble? Why do we flush the toilet? This magnificent book features chapters on Bugs, Pets, Wild Animals, the Body, Food, Machines and Space and also includes some of the mysteries which experts are still trying to solve! By encouraging childr ...