Introduces the physical characteristics, habits, and natural environment of several kinds of lemurs whose principal home is the forest of Madagascar. Also discusses the uncertain future of these animals in the wild and what is being done to preserve them from extinction.
Describes the discovery of Halley's comet and its historic significance. Also briefly discusses what is known of the composition of comets and their relationship to earth.
Traces the history and influence of the Ferris wheel since 1893, when the first giant steel wheel, the invention of engineer George Ferris, was constructed for the Columbian Exposition in Chicago.