We think of our home planet as the "water planet". As we gaze out in awe at the other planets in our solar system, we know we’re unique in having nearly three-quarters of our planet covered in beautiful water. Life as we know it depends on water for its very survival. 

This interactive lesson will allow you to explore Earth’s freshwater resources. You will learn how NASA's Global Precipitation Measurement mission is helping us better understand our most valuable natural resource.