On a visit to a natural history museum, a little boy sees fossilized skeletons of dinosaurs and learns what archaeologists have discovered about the physical appearance and habits of these huge, extinct creatures.

Introduces the way in which the sun's relationship to the earth is responsible for seasonal changes.

Briefly introduces various types of dinosaurs whose skeletons and reconstructions are seen in museums and explains how scientists uncover, preserve, and study fossilized dinosaur bones.

Profiles animal species around the world that have gone extinct within human history, or that are at risk for extinction.

Explains how ants live and work together to build and maintain their cities.

Explains how electricity is produced and transmitted, how to create electricity using an electrical wire and a magnet, how generators supply electricity for cities, and how electricity works in homes.

Describes the origin and nature of hurricanes and ways of staying safe when threatened by one of these dangerous storms.

Explains how icebergs are formed from glaciers, move into the ocean, create hazards to ships, and sometimes melt away.

Briefly describes how a cow produces milk, how the milk is processed in a dairy, and how various other dairy products are made from milk.

Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.