What a neat interactive that interacts with the amount of water on Earth's surface. It begins with a brief audio introduction of the Blue Planet and how it got its name. Then, users click on the activity to play a game...

It may be tricky for a young mind to conceptualize that less than 1% of all water on earth is useable for humans to drink. Simulating the amount of fresh water available on earth by removing measured amounts of water from a five-gallon...