Still largely uncharted, Antarctica is already being used as a garbage dump. This program introduces the geography of this continent and contrasts the beauty of the icescape with the discovery made here of the potentially lethal hole in the atmosphere that exposes us to carcinogenic levels of ozone. (26 minutes)

Tell a Friend! Your Name: Your Email: Your Friend's Email: Your Message: We respect your privacy and will not use your friend's address without permission. Item#: This title is currently not available.

Not available in South Africa.

		Internal Defenses This program deals with events when the entire body is under attack-when bacteria or viruses invade the whole system. It shows the roles of the spleen, the lymphatic system, and the white blood cells, and explains the body's production of antibodies....(more details)
		The Circulatory System: Two Hearts That Beat as One This program describes the structure and functioning of the heart. It analyzes the three basic components of the heart-muscle, valves, and pacemaker-and shows how each one contributes to the proper functioning of the organ as a whole. (26 minutes)(more details)
		Moving Parts This program shows how the cerebellum coordinates muscle activity and how position sensors in the muscles and joints and the balancing mechanism of the inner ear function. The motions of a waterskier show how muscles, joints, and organs link up. The ...(more details)
		Civilization and Climate Changing climate probably played the decisive role in drawing hominids out of the trees, up on their hind legs, and off in search of food whose supply had been dispersed by the replacement of rainforests by grasslands. Migrations were motivated by th...(more details)
		Life in Arid and Semi-Arid Lands This program explains what a desert is, why it occurs, what kinds of plant and animal life it sustains, and how that life is adapted to-or adapts to-the lack of water. The primary focus is on the effects of growing populations in arid or semi-arid re...(more details)

See additional titles in Weather & Climate | Environmental Problems & Management