Alvin Silverstein

Explains photosynthesis, the process responsible for providing the material and energy for all living things, and discusses such related issues as respiration, the carbon cycle, acid rain, and the greenhouse effect.

"Explores 'yucky' things about the human body, including earwax, gas, bodily wastes, and more"--Provided by publisher.

Examines the pros and cons of keeping less common dog breeds such as akitas, chihuahuas, and Saint Bernards, discussing their care, feeding, and emotional needs.

"Discusses the science behind tornadoes, including how and where they form, the scientific methods to track and predict them, and tornado safety tips"--Provided by publisher.

Describes the structure and function of teeth and discusses how cavities form and how to prevent them.

Discusses the causes, symptoms, and treatments of depression, examining the different types of depression and their effects on the individual and on society.

Provides information about bones, discussing their purpose in the human body, how they move, and what happens when they break.

A detailed presentation of the structure and function of different types of cells and of research into developing technologies such as cloning and the use of stem cells.

Describes the physical characteristics and behavior of the grizzly bear, its decline in numbers due to human population growth and activities, and the efforts being made to maintain its population.