Chronicles the history of the potato and discusses how it contributed to the American and European economies, how it helped people survive famines, and how it affected politics.
Discusses how the use or trade of chocolate, tea, sugarcane, cotton, potatoes, corn, rubber, pepper, cinchona, and papyrus changed the course of history.
Recounts five episodes from history when the introduction of new plants or plant products, from grains and spices to coal, influenced the course of civilization.
