An exploration of earthquakes that provides accounts of individuals who have survived one, explains what causes them, and discusses related disaster prevention and safety procedures.
Provides information about smallpox, a quickly spreading virus that has caused several plagues throughout history, describes the symptoms of the disease, and looks at the development of a vaccine which has led to the eradication of the virus.
This book describes the longest beaver dam in the world, located in Canada's Wood Buffalo National Park, discussing how beavers cut down trees, haul heavy logs, use mud and sticks to hold their projects together, and work at other tasks.
