Adams, Krista

Presents a discussion of natural sources of air pollution and its effects on humans, plants, and animals, covering primary and secondary sources, monitoring by government agencies, and measures such as green roofs and the Clean Air Act, with commentary by experts and noteworthy case studies.

Presents a discussion of soil pollution and erosion, which is magnified by human activity, and how it has been addressed, covering the Dust Bowl of the 1930s and resulting changes in farming methods, with commentary by experts and noteworthy case studies.

Presents a discussion of the environmental, economic, and health effects of water pollution and scarcity, and covers conservation efforts and measures such as the Clean Water Act of 1972 and the construction of desalination plants, with commentary by experts and noteworthy case studies.

Examines the life of Abraham Lincoln, from his youth in Kentucky to his service as president of the United States, discussing his leadership during the Civil War, and his resolve to put an end to slavery.