The booklet describes 40 occupations related to the environmental areas of studying the earth, tackling pollution, better food and fewer diseases, developing the land and its uses, and protecting natural resources. For each occupation, duties are outlined and working conditions discussed. Techniques used to complete the illustrations include brief case histories of individuals in various positions, anecdotes to demonstrate the kinds of interactions involved in some jobs, and descriptions of a typical day on other jobs. Suggestions are offered for training and entering most jobs. A fact chart is included showing jobs in the various subdivisions with their educational requirements and salary ranges. Among the jobs described are crop scientist, geologist, geophysicist, industrial hygienist, meteorologist, mining engineer, oceanographer, sanitary engineer, soil conservationist, and urban planner. (KH)