regulation

Teaches children about the differences and similarities between warm-blooded and cold-blooded animals.

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

Offers teens practical advice on how they can take control of their weight, change their diet for the better, and create an exercise program that's both fun and rewarding.

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

Describes the different ways animals and people protect themselves from cold weather and discusses how body heat, food, shelter, sunshine, clothing, and fuels all work to keep us warm.