water

When the Sudanese civil war reaches his village in 1985, eleven-year-old Salva becomes separated from his family and must walk with other Dinka tribe members through southern Sudan, Ethiopia, and Kenya in search of safe haven.

Professor Snickerdoodle explains how to perform various experiments and tricks with water, including making a clay bowl float and using a drop of water as a magnifying glass.

Explains the water cycle from the first tiny drops of frozen snow, to the river, and the ocean.

Examines how rain affects humans, discussing how it is needed for drinking water, farming, and the generation of electricity. Includes experiments.

Explores the factors that convinced the U.S. Public Health Service to endorse the fluoridation of water in the 1950s and considers why this practice continues in more than seventy percent of America. Discusses how water fluoridation can cause harm to the brain, bones, and endocrine system and argues that the reason fluoride was introduced in the first place -- to reduce tooth decay -- is not as solid as some would think.

An introduction to the microscopic creatures that can be found in rivers and ponds, including the microbes that live in water, ciliates, amoebas, algae, and more; and describing how microorganisms interact with their environment and impact the larger world.

This eye-opening look at life in an African village is narrated by Asale, a little girl whose family struggled to find enough water until a charity built a well in their area. Quotes from Asale illustrate life before and after the life-saving construction. Closes with a blunt conservation warning, followed by a plaintive comment from Asale that if people in rich countries keep using so much water, "there will not be enough for people in poor countries like mine.".

Questions and answers explain water, the water cycle, and such aspects of weather as rain, clouds, ice, and snow. Includes experiments and activities.

Explains the origins and uses of water.

Examines the ways in which humanity is poisoning the waters of our planet and how this pollution can be stopped.