From the mysteries and wonders of the natural world to man-made marvels in science, technology, and innovation, planet Earth is full of fun and fascinating things to discover at any age. Although most knowledge can be gleaned online today, there is nothing quite like the charm of learning from books packed with witty writing and illustrations like Diarmuid Cathin's compelling series on Little-Known Facts. Little-Known Facts: Human Bodies presents readers with the unique opportunity to explore the extraordinary and unexpected traits and biology of people in an easy-to-remember, visually delightful way.