Is it possible to tell how happy a dog is by watching the way it wags its tail? Why is the Eiffel Tower 15 centimetres taller in mid-summer than it is in mid-winter? Does sound travel faster in water or air? Can one really read other people like a book? Why do so many people hate eating their greens? Firmly in the tradition of DOES ANYTHING EAT WASPS? new scientific kid on the block Chris Smith - aka THE NAKED SCIENTIST - explores present-day predicaments and tomorrow's technologies, from the most surprising facts to the most innovative new inventions, from staggering stats to serious developments that will transform the world around us. In this fascinating book, top scientist Chris Smith uses his wit and charm to lift the lid on the curious, crazy and compelling - and answer those questions you never thought to ask.