Water is all around us, but we don't really give it much thought. We should think more about water. There isn't really as much usable water out there as it may seem. High quality, fresh water is relatively scarce. More than oil, technology, or even money, the availability of clean, fresh water is the key to the quality of life for millions of people.
Water is one of our most important resources.
The amount of water on the Earth today is the same as it was billions of years ago. There is no more and no less. Water changes its form throughout this cycle. It can exist as a solid, liquid, or gas. It also changes its location.