Examines the deserts of the world, describing their location, climates, landscape, and ecology, and discusses the impact and effect of human beings on desert areas.
Explores the question of how mountains are made, how they are changed by weather, wildlife, and the efforts of humanity, and how they and their resources may be protected.
Describes chemical, geological, and biological aspects of the oceans of the world and discusses the impact and effect of human beings in exploiting, polluting, and trying to save the oceans.