Earwax is self-cleaning. The only parts of our bodies that don't have hair are the palms of our hands, the soles of our feet, and our lips. There are so many fascinating facts about our bodies and processes that occur inside it, it's hard to know everything! Readers learn some of the coolest facts about the human body through a fun and colorful layout. Diagrams, fact boxes, and full-color photographs engage readers with biology concepts presented in an understandable and age-appropriate way.