Follows Don as he sees different kinds of rocks at a granite quarry, sandstone cliff and museum. Demonstrates the effects of water, heat and pressure...
Contrasts ancient and modern methods of irrigation along the Nile. Discusses the benefits of the dam at Aswan. Shows how the Nile brings fertility to...
Depicts life in a medieval town from the point of view of a young serf. Explains the influence of trade and the role of the merchant and craft guilds...