After the end of the war in Vietnam, a young boy's grandfather dreams of restoring the wetlands of the Mekong delta, hoping that the large cranes that once lived there will return.

While baby sitting with their brother, Libby and Sam have a hard time guessing what Alvin wants to make him happy.

A variety of different bugs compare their relative sizes while going on parade.

Describes the formation and characteristics of igneous, metamorphic, and sedimentary rocks and how to recognize and collect them.

Explains the concept of a food chain and how plants, animals, and humans are ecologically linked.--

Describes the physical characteristics of a variety of snakes and how they hunt, catch, and eat their prey.

An introduction to one of the curiosities of the sea -- the mult-tentacled, highly intelligent octopus.

Discusses the importance of trees as sources of food, oxygen, and other essential things.

Explains how plants and animals of the meadow, woods, and pond grow and evolve, such as caterpillars changing into butterflies, eggs hatching into robins, and acorns becoming oaks.

Explains what shooting stars are, what they are made of, and what happens to them when they land on Earth.