I wonder why

An illustrated introduction to the history of ballooning.

Presents information on volcanoes, floods, hurricanes, and other natural disasters, in a question and answer format, and includes explanations of how they happen.

Examines various environmental issues, and answers questions for children, and describes why there is life on Earth, discusses the ozone, pollution, improving homes to become more environmentally friendly, and other related topics.

Questions and answers about our planet such as what are clouds made of and which is the coldest place in the world?.

Uses a question and answer format to present information about time and the seasons, such as how to split a second, who invented our calendar, and why the moon changes shapes.

A collection of questions and answers about the oceans including "What is sand made of?" and "Which sea animals sing like canaries?".

Questions and answers introduce the clothing, food, language, religion, and other aspects of daily life in Ancient Rome.

Answers questions about how people lived and worked in ancient Egypt, covering religious beliefs and practices, mummies, food, clothing, makeup, leisure time, and pets.

Poses and answers thirty-one questions about pirates such as: How did people become pirates?, Did pirates have wooden legs?, and How were pirates punished?.

Poses and answers thirty-one questions about mountains, such as: Can snow move mountains?, How high do birds nest? and Why do climbers wear spikes?.