Maya Lin is currently working on what will be her last memorial, entitled What is Missing? which will focus on bringing awareness to the current crisis surrounding biodiversity and habitat loss. Once again reinventing what a monument can be, What is Missing? will be a multi-sited work existing in select scientific institutions, online as a website, and as a book. It will debut at the California Academy of Sciences in September 2009 with a sound and media installation located at the Academy's East Terrace.