Briefly explores a number of still-unsolved questions about the human body--including why people laugh, dream, and yawn. Includes photographs, illustrations, a glossary, and further resources.
An engaging graphic-novel introduction to the human gastrointestinal tract discusses the science that underlies digestion, counseling students on subjects ranging from saliva and nutrient processing to illness and friendly bacteria.
Presents comprehensive information on the human skeletal system, covering such topics as the components of a bone, the importance of joints and ligaments, and technological advancements in limb and bone prostheses--
"Why do I have a belly button? What happens to the food I eat? Why am I different from everyone else on Earth? All children want to understand how their body works, and this lively illustrated book explains it all, from what DNA is to how their heart pumps blood"--