Provides information about global warming, discussing the causes and effects of warming climates, and offering suggestions on how to reverse the trend.
Describes the parts of the mouth and how they function and discusses why things taste different to different people, the relationship between smell and taste, the sense of taste in animals, and more.
Presents a realistic assessment of the threat posed by the growing loss of ozone. Explains how ozone is formed, and how scientists discovered that the ozone layer is vanishing.