Nina Morgan

Discusses the life cycle of plants, how plants change with the seasons, how they function in a plant community, and the destruction of plant cycles in rainforests and other areas. Features projects and activities.

Examines the many aspects of culture in the Aztec society, including their food, clothes, buildings, industry, transport, warfare, and technology.

Explains what lasers are and how they are used in communications, medicine, industry, and warfare, as well as possible future uses.