Barnhill, Kelly Regan

Describes the history of sewage treatment and discusses wastewater treatment plants, rats that live in sewers, and other related topics.

Describes how water is purified before it comes into the home and the effects of unclean water on the body.

Photographs, riddles, and simple text demonstrate how animals change as they grow up.

Jack is practically invisible at home, but when his parents send him to Hazelwood, Iowa, to spend a summer with his odd aunt and uncle, he suddenly makes friends, is beaten up by the town bully, and is plotted against by the richest man in town.

This book describes a variety of famous hoaxes from the past, such as the Cottingley fairies, Piltdown Man, and the Hitler diaries.

Describes the gross qualities of sweat, and how it works to benefit a person's health.

Describes a variety of popular monsters, including real-life accounts that inspire the legends behind the creatures.

Describes a variety of nonconventional medical practices, such as bloodletting, lobotomies, vibratory chairs, and others.

Describes rituals and sacrifices practiced by different cultures throughout history, such as mummification, Chinese foot binding, fire walking, and others.

Describes the gross qualities of urine, and how it works to benefit a person's health.