A collection of facts and trivia about human physiology and anatomy, usually framed in a question and answer format, such as "Do you know when the body grows fastest?", "Do you know if bones are made of jelly?, and "Do you know why skin only lasts for four weeks"?

Illustrations and text in question and answer format provide selected information about science, such as "Why can I see myself in a mirror?", "What is the point of science?", "Is there gold at the end of a rainbow?", and "Why do snowballs melt in your hand?".