You probably enjoyed a nice shower this morning (you are taking cold ones, right?!). Maybe you’re tipping back a bottled water without much of a care except your smartphone calendar pings. But around the world, those scenes often are a true luxury, with some 783 million people lacking traditional access to clean water. Yet, water is everywhere. About 13 trillion liters of it hides in every breath we take, right in the atmosphere. Now, as