Did you know that the vast majority of our universe is missing? Or that Santa would spontaneously combust if he tried to deliver presents to all the children of the world? Is a hand dryer more hygienic than a paper towel? When will we be able to cryogenically freeze ourselves? And can we win at the pokies? Does Coca-Cola really dissolve teeth? Why do we have more accidents on a full moon? And why is the sky blue? All these questions and much much more are answered in the dazzling new book of fun science stories by Dr Karl Kruszelnicki.