Basic information on the history of money, supply and demand, the Federal Reserve System, international exchange, inflation, and managing money, including stock investing.
Explains how contours of the land are sculptured by violent phenomena such as landslides, as well as gradually eroded by chemical and mechanical weathering.
Discusses the evidence for the existence of ice ages, explains what glaciers are, and presents the many explanations offered for the causes of ice ages with emphasis on the astronomical theory. Also considers the effects of future climatic changes.
Explains the theory of continental drift, presents the supporting evidence, and describes how this knowledge is important in locating valuable resources and developing warning systems for earthquakes and volcanoes.
