Three-time Caldecott Honor Artist Molly Bang and National Science Award-winning professor Penny Chisholm present a stunning, accessible explanation of the Earth's water cycle and its global effects. With stunning artwork and compelling scientific explanation, Bang and Chisholm have brought forth a masterpiece that is critically relevant in this environmentally tumultuous time. How does the sun keep ocean currents moving and lift fresh water from the seas? What can we do to conserve one of our planet's most precious resources? In this newest book in the award-winning Sunlight Series, readers learn about the constant movement of water as it flows around the Earth. As the water changes between liquid, vapor, and ice, Sunlight powers all living things, ensuring that life can exist on Earth.Perfect for any reader—young or old!—this is an invaluable addition to all classrooms, libraries, and at-home collections.