The article discusses ways to use less water by focusing on reducing our water footprint. By studying how much water we need, the researchers found ways to cut down on water use. They suggest improving how industries use water, changing what we make and how we use it, and trading water virtually. This can directly reduce how much water a region uses. They also talk about ways to use water more efficiently in farming to decrease the water footprint. Finally, they mention using alternative water sources like recycled water and rainwater to reduce how much new water we use. Overall, the idea is to manage water better based on minimizing the water footprint to protect and sustain water resources and ecosystems.