Curator, editor, writer and consultant working in visual and performing arts. 1990-2000, Editor, Parkett, an international art journal and produced artist monographs; co-curated international biennials of contemporary art, including Whitney (1997), Sao Paulo (1998 and 2000) and Sydney (2000); conceived and directed exhibition and event programmes for galleries and theatres, combining performing arts, multimedia, artist-led community projects, radio broadcasts, lectures, and discussions; currently, Director, Gagosian Gallery, responsible for exhibition programming, publications and communications, public and private collections consultancy, artist acquisitions. Author and editor of books and articles on visual and performing arts.