adaptation (physiology)

A NOVA investigation of deaths at high altitudes, looking at mountain rescues, emergency medical evacuations, and science experiments performed on Mt. McKinley in Alaska's Denali National Park.

Investigates the causes of illness and disease through application of the Darwinian theory of natural selection, which attempts to explain why humans, in general, are susceptible to some diseases and not to others and why some parts of the body are so prone to failure.

Learn how animals use resource conservation to survive in harsh or extreme conditions.

Explores the affects of heat on living things.

Photographs and text depict how fur, feathers, and blubber keep animals warm in cold weather.

Describes how living things, especially animals and human beings, adapt to environmental temperature changes, in order to conserve heat in cold weather and lose it in hot weather.

Describes how different animals have adapted to survive the extreme conditions found in the world's deserts.

Photographs and text depict how fur, feathers, and blubber keep animals warm in cold weather.

Describes the specific physical adaptations of animals to five different types of environments including Arctic and Antarctic, desert, rain forest, savanna, and mountain.

Describes how animals stay cool in hot weather, by such actions as wallowing in mud, burrowing, or panting.