Explores the ways in which water on Earth has become polluted--and what people around the globe are doing to solve this problem.

Includes glossary and index.

(Common to all reading levels): Introducing the issue: water world -- World hot spots map: industrial water pollution -- Grade 5 (blue): Case study one: South America: Cleaning up Lake Titicaca -- Case study two: East and Southeast Asia: Dolphins in danger in the Mekong -- Grade 6-7 (orange): Case study one: South America: Protecting the Amazon -- Case study two: East and southeast Asia: China's powerful rivers -- Grade 8 (green): Case study one: Rescuing Lake Maracaibo -- Case study two: East and southeast Asia: Murky water in the South China sea -- (Common to all levels): National Geographic at work:Sylvia Earle & Enric Sala / Marine protected areas & water pollution -- What can I do? Rescue a river -- Research & write: explanatory Common Core standards: write an informative article -- Visual glossary -- Index.