Water bubbles, flows, and fuels all life on earth. But worldwide pollution and climate change make it increasingly difficult for people and animals to find the clean water they need to survive. A focused call for action, this lively book narrates the history of our watery earth, succinctly explains the water cycle and the different types of freshwater, and introduces the vast array of living beings that depend on clean water for survival--as well as the devastating impact of water shortages on the lives of children around the world. Packed with facts and specific tips, bright and expansive illustrations, and end matter for further reading, this hopeful challenge inspires young readers to take action, use water wisely, and work together to defend a precious shared resource.