An introduction to human biology-the subject of the most fascinating human study: ourselves. Shows a wide range of human activities and how the body enables us to live in diverse climates and perform diverse activities. Extraordinary close-up filming over the body's exterior and in its interior causes surface differences to fade away and shows the immensely complex and interactive systems that constitute the living body. NOTE: Contains some nudity. Accessibility options on the DVD are: (1) audio description, (2) English subtitles, (3) English subtitles in a black box, (4) closed captions.