water pollution

Invisible microbes cause sickness by invading our bodies and multiplying. But doctors didn't always know that sickness was caused by germs. Most people thought diseases came from smelly, damp air. But over time, those ideas changed. A Dutch scientist saw bacteria through his microscope. Doctors realized that when they washed their hands, fewer people died. And a doctor in London recognized that disease could spread through contaminated water. Because of these discoveries, people eventually learned that hygiene was the key to stopping disease. Hospitals used clean surgical instruments, and cities developed trash removal and sewage systems. Learn more about the discovery and defeat of bacteria!.

The Treehouse Times staff looks into some facts and figures given them by a biologist when they focus on Earth Day.

An exploration of water as a basic need, covering how plants and animals use it and water pollution.

A collection of articles that provide information on water pollution, arranged in alphabetical order, with illustrations and maps.

"When a nearby mountaintop removal mine is suspected of contaminating the water and sickening the residents of a small Kentucky town, sixteen-year-old Liberty Briscoe searches for answers"--Provided by publisher.

A chose-your-own adventure in which the reader must try to save a river from being poisoned.

"Describes the issues facing our planet concerning water conservation and pollution"--.

"When the little beaver Kobe discovers that his home at Green River has become polluted with trash and is no longer safe, Kobe decides to take action. With the help of his friends, they remove the trash from the river and work together to build an amazing playground"--Provided by the publisher.

Describes what is happening to fish, the oceans, and the environment in the early twenty-first century, explaining how commonly-consumed fish, such as tuna, cod, and salmon, are disappearing; and discusses the impact of overfishing on other species and the effects of fishing on the oceans.

Describes daily life before clean water became available, and traces the history and development of the process. Also features fact boxes, activities, diagrams, a timeline, a glossary of terms, and trivia.