BioSphere 2 is an American Earth system science research facility located in Oracle, Arizona. It has been owned by the University of Arizona since 2011. Its mission is to serve as a center for research, outreach, teaching, and lifelong learning about Earth, its living systems, and its place in the universe.
The window crew spent nearly a month cleaning more than 4,000 of the BioSphere's windows with over 1,000 gallons of OneRestore and 10,000 gallons of water.
The results....well, they're clear to see!