Right now, oil is the hot commodity. But it might not always be that way. Whether or not we have hit peak oil, it’s a finite resource and it won’t last forever. And then the real resource war will start. Because, you see, humans can survive without oil. Our ancestors did so for thousands of years. What humans cannot survive without is water. And water, like oil, is a finite resource. Look around you, and it might seem like there is plenty of water. We live around lakes, rivers, streams and creeks. You probably have a decorative fountain or pool not far away. Water freely flows out of our taps and into our toilets. Well, not literally out of course, that water comes at a cost, both financial and environmental.