An introduction to growing crystals, discussing the different types of crystals and how they are made.

Describes the origins, properties, chemical activity, and uses of the element calcium.

Discusses the origin, discovery, special characteristics, and uses of aluminum.

Describes the properties of the chemical element commonly found in swimming pools, which was the first poison gas to be used in warfare.

Describes why priests built missions, how they protected them, what daily life was like, and why many missions eventually fell apart.

Suggests what to consider when selecting a hamster for a pet and explains what it needs by way of housing, food, health care, and activities.

A study of earthquakes and the science behind them.