The science guy explains how the respiratory system functions and presents several examples to illustrate the respiration process. Uses a model to identify the respiratory organs, explore the anatomy of the lungs and diaphragm, and demonstrate how breathing occurs. Also explores the process of cell reparation and examines how fish breathe underwater using gills. Features a segment on how cigarette smoke infiltrates and damages the lungs and stresses the importance of exercise for cardiopulmonary health.

Award-winning series explores the world of science and nature using humor, music, experiments, and interviews with scientists. DVD features fully indexed chapters correlated to national science standards, downloadable teacher's guide, interactive glossary and quiz, Internet links, and bonus materials.