Cleaning up Our Dirty Water with Microbes and Grease, S7E2

How long will the world's supply of clean fresh water last? Just the fact that we have to ask that question is enough to start worrying, as threats from pollution, climate change, and overpopulation continue to get worse. Fortunately, researchers like Tyler Radniecki are at the vanguard of the search for solutions to revive and restore this precious resource.