We all take freshwater for granted, but we shouldn’t. By 2025 two thirds of the global population may experience water scarcity, so there’s a freshwater crisis coming. And that’s because of global warming driven droughts. Supply cuts are looming in the Southwestern US and water is fueling wars across the world. There’s a sea of desalination technologies coming up. Like solar domes in the desert or nanofiber technology membranes and other nanomaterials making seawater drinkable in minutes. Let’s take a look at how nanotechnology could help contain the freshwater crisis and help with sustainability.