At head of title: WWF.

Includes bibliographical references (p. 187-192).

Major biomes, climatic regions and land use -- Human numbers -- The urban revolution -- Food production and consumption -- Drinking water and sanitation -- Health -- The education gap -- GNP and the debt squeeze -- Industrialization and development -- Indigenous people and refugees -- Deserts and desertification -- Freshwater : abundance and scarcity -- Freshwater pollution -- Tropical forest destruction -- The tropical timber trade -- The fuelwood crisis -- Damaged watersheds -- Temperate forests under threat -- Acid rain -- Urban air pollution -- The greenhouse effect -- The ozone layer -- Toxic and hazardous wastes -- The spread of agrochemicals -- Natural and man-made disasters -- Fossil fuel resources and energy conservation -- Nuclear energy -- Renewable energy resources -- Biological diversity and genetic resources -- Areas of endemism -- Protected areas and national parks -- Major conservation efforts -- Wildlife trade -- Migration -- The world's wetlands -- The world's fisheries -- Whales and whaling -- Mangroves, coral reefs and seagrasses -- Mineral resources of the sea -- Pollution of the seas -- The Arctic -- Antarctica.