A study of the center of the solar system discusses its composition--from its thermonuclear core to its surface to the corona--as well as its processes and role as a source of energy.

With winds that can reach speeds of three hundred miles an hour and funnel clouds that can measure a mile in diameter, tornadoes leave enormous damage in their wake. Now Seymour Simon examines these twisting columns of air and destruction. Simon explains how tornadoes are formed, why and when they are most likely to occur, how scientists classify and track them -- and what to do if one touches down. Full-color photographs show this powerful phenomenon...

This book describes the heart, blood, and other parts of the body's circulatory system and explains how each component functions.

Contains an illustrated introduction to the physical characteristics, behavior, and life cycle of different kinds of spiders.

Text and photographs present the physical characteristics, habits, and natural environment of various species of wolves.

Provides a brief history of horses, including how they evolved and how they have been trained by man for work, sports, warfare, and companionship. Also includes information about different varieties of horses as well as their physical attributes and their eating and breeding habits.

This book describes the various parts of the brain and the nervous system and how they function to enable us to think, feel, move, and remember.

Provides a basic introduction to the physical characteristics and behavior of dogs.

"It took 70 days to prepare a pharaoh's body for burial. First, the organs had to be removed from the body. Only the heart was left because Egyptians believed that it contained the soul."--BOOK JACKET.

Discusses the history, physical characteristics, behavior, and various breeds of cats, and provides basic information on caring for one as a pet.