Examines the history of marriage, changes in the purposes of marriage through the centuries, changes in family structures, and the debate over same-sex marriage, and discusses whether marriage will die out in the future.
Discusses explorers and their discoveries throughout history, covering Viking voyages, Chinese explorers, Marco Polo, Ibn Batt?ta, the Portuguese and other European adventurers, journeys to the poles, and other related topics.
Describes the imperial histories of China, India, and Turkey, covering such topics as the Han dynasty, the Moghuls, and the reign of Suleyman the Magnificent.
Introduces the study of chimpanzees with emphasis on their habitat, physical characteristics, social life, intelligence, relationship to humans,and status as an endangered species.