Pringle, Laurence P

Presents a brief history and explanation of each kind of radiation.

An introduction to the life and behavior of crows.

Describes the plant and animal life of the North American desert.

A detailed account of the Lewis and Clark expedition features the dog that was its most unusual member. Selections form the actual journals of Lewis and Clark appear throughout the text.

Discusses the risks our society faces everyday as we deal with frightening uncertainties about food, transportation, clothing, air, disease, natural disasters, and almost every area of our lives.

Contains photographs, text, and five essays about rivers and lakes.

Spine title: Volcanoes, earthquakes, and powerful storms. Examines the greatest forces of nature and explains what humans have learned from studying them.

Explores the social, political, and economic aspects of a vital resource--water.

Describes the steps in a food chain and discusses their importance in the maintenance of life.

An introduction to the study of the play behavior of a variety of domestic and wild animals.