Examines such aspects of stars as their relationship with other heavenly bodies, their study by humanity, their chemical composition and life, and the different kinds of stars.
Discusses the many aspects of outer space, including how it has been explored and measured, how it may have been formed, what bodies exist in it and how they move, and how it is changing.
Traces the evolution of reptiles from various prehistoric animals, including flying and sea dinosaurs. Discusses the death of dinosaurs, where reptiles live today, the variety of lizards, snakes, crocodiles, alligators, and turtles, their enemies, and their future.
Introduces various types of insects, describing their skin, wings, eyes, feelers, life cycles, and environments; how they breathe and eat; and those that are pests and those that are helpful.
Traces early maritime history from the Egyptians to Captain Cook, discusses how sails were developed to use the wind, describes clipper ships, steamships, ocean liners, working ships, inland waterways, and canals, and examines safety at sea and the future of ships.
Discusses the types of forests, the trees that constitute them, the clearing and planting of forests, and their interaction with both humans and wildlife.
Describes various aspects of deserts, including their creation, modernization, plant and animal life, mineral and oil resources, and how humans live there.
Discusses such aspects of farming as commercial farms that use machines, small farms in undeveloped countries, food crops and what happens to them, factory farming, and dairy farming.
Describes different types of families around the world, discusses how families work and play together, and defines such terms as foster parent, household, and relative.
Discusses how planes fly, the history of flight, the first airlines, occupations involving aeronautics, contemporary commercial flights, and other aspects of planes.