Julia Waterlow

Describes the course of the Nile River from its source in central Africa to the Mediterranean Sea and people who have explored it, civilizations it has fostered, efforts to control it, and more.

Describes these arid lands through which some of the world's largest rivers flow and explains how such areas are formed, how they spread, and how life survives there.

Explains how grasslands are formed, the wildlife that inhabits them, and the impact human beings have on the grassland environment.

Presents information about the second-largest ocean including its plant life, fishing and mineral resources, use for transporting settlers and cargo, and problems with pollution.