The cover image for this issue of Artkrush is a detail from a photograph of Nationalgalerie, an installation by Daniel Knorr. The collection of 58 flags, arrayed upon the Mies van der Rohe-designed Neue Nationalgalerie in Berlin, may seem political, but has lighthearted origins: each represents one of Berlin's student fraternities. As part of the Berlin Biennial's When things cast no shadow show, the work will be on view through June 15.

Born in 1968 in Bucharest, Romania, Knorr now lives and works in Berlin. He has studied at Munich's Akademie der Bildenden Künste and at the Vermont College of Norwich University. In 1999, Knorr received the Villa Romana Prize in Florence. Some of his more recent accomplishments include a solo exhibition at the 51st Venice Biennale's Romanian Pavilion; participation in the Triennale für Kleinplastik in Fellbach, Germany, and the 2007 Moscow Biennial; and solo shows at the Project, New York, and Serge Ziegler Galerie, New York and Switzerland.

Knorr demands much from his viewers, undermining their expectations and sometimes giving them literally nothing in return. For the Venice Biennale in 2005, he left his pavilion empty except for the title European Influenza, traces of exhibitions past, and an enormous "reader" of politically charged essays; what constituted the final artwork was not the void itself, but the personal and critical reactions that ensued. In addition to invisible art, Knorr dabbles with architecture, design, happenings, and sculpture. In 2002, he answered a Bern, Switzerland, commission for public art with a robotic duo, Lui & Morty. The city had banned beggars from central streets several years earlier, so Knorr supplied its downtown with a charming, hat-tipping bum and his trick-performing dog. Knorr's work may be quirky, but it has rich, conceptual foundations, as well as a conscience. - Lauren McKee