Spotlight on resources

Explains how wheat, rice, and other grains are grown, milled and made into foods and drinks. A brief history of grain is included.

Discusses the mining of silver and its processing into objects with technological, medicinal, industrial, and artistic uses.

Discusses the mining of copper, its ability to mix with other metals, and its processing into both artistic and useful objects.

Describes the composition of plastics, the developmental history of this field, and kinds and uses of plastic materials.