Text and accompanying photographs cover a variety of ways of transporting people and goods on land, air, and sea, and discuss environmental issues involved.
Text and accompanying photographs discusses the worldwide farming industry, its principal crops, the effects of agriculture on the environment, and future trends.
Presents an overview of the earth's natural resources, describing what they are, where they are found, how they are used, and how this use affects the environment.
Text and accompanying photographs examine the ways in which land is used around the world, for farming, industry, habitation, transportation, and other purposes.
Text and accompanying photographs discuss how people have polluted the environment, threatened animals with extinction, exhausted natural resources. Suggests environmental projects for individuals and groups to maintain and protect the natural world.
Text and accompanying photographs discuss population growth, problems of overpopulation, population distribution, ethnic differences, women's roles, and environmental concerns for the future.