Water covers 70% of the Earth's surface, stored in lakes, glaciers, underground, and within living organisms. The Earth's water is recycled through the water cycle, where water evaporates from the surface into the atmosphere, condenses into clouds, and falls back to the surface as precipitation. This continuous process means water is reused over and over, and water molecules today could be the same as those drunk by historical figures. Water is collected from precipitation and stored in rivers, lakes, wells and reservoirs, then pumped through pipes to homes and buildings.

1. Water, Water Everywhere!