When Louise Schaper opened the new Fayetteville Public Library (FPL) in Arkansas in 2004, she brought the state's second LEED Silver-certified building to completion. The green building fulfilled a community expectation for sustainable innovation established through complex public dialog, and the library went on to become the "2005 LJ/Gale Library of the Year." The building also prompted Schaper, who retired as director in 2009, to see the library's operations afresh, with an urgency to match the building's green outside with the practices inside. For Schaper herself the approach meant a steady evolution toward greener customs, an embrace of data, and clarity about the importance of libraries and librarians to be green leaders. In this interview, Schaper says sustainable management is critical and touches every aspect of the library.