Describes how clouds, hail, snow, and rain form, and discusses why the water cycle is important.

The fresh water supplies of the Earth are finite and as the world's population continues to grow humanity's thirst for this water seems unquenchable. Intense pr

This classroom resource provides clear, concise scientific information in an understandable and enjoyable way about water and aquatic life. Spanning the hydrolo

After rain comes down, the sun comes out and dries the puddles. But the water isn't gone. The heat from the sun has turned it into water vapor-it has evaporated

A mother and baby seagull follow the journey of a drop of water as it falls from the sky and eventually returns to the clouds.