March 22 is World Water Day, and this year's theme is "Groundwater: Making the Invisible Visible." But what exactly is groundwater? Where does it come from? How do we use it and why is it important? This video answers some of those questions, and leading water experts at the University of Arizona are working to understand all aspects of groundwater so we can wisely use and protect this vital resource.
Director/Editor: Arlene Islas. Writer/Artist: Mikayla Kelley