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The exhibition 24h Skulptur at Galerie Sexauer, Berlin, which paired Time Sculptures by young artists like Alicja Kwade, Humberto Diaz, and Awst & Walther with benchmarks of the genre by Dennis Oppenheim, Roman Signer, and Franz Erhard Walther, lasted no more than one night and one day. Most of the sculptures on display presented constantly changing appearances; other pieces were performed live as sculptural actions.

The book 24h Skulptur: Notes on Time Sculptures features color photographs of all exhibits as well as statements by the artists on the significance of time for their work. A conversation between the curators, Ursula Ströbele and Andreas Greiner, explores the meanings of the idea of the sculpture today, and an essay by Julia Wallner examines the challenges museums encounter in handling ephemeral artifacts. The book complements the ample illustrations with two virtual sculptures by Sebastian Acker and Nico Princen and combines a critical study of the expanded conception of sculpture with documentation of a singular exhibition. An intervention by Norgad Kröger makes every copy a unique work of art.

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Andreas Greiner is full professor for polymer chemistry and technology at the Philipps-University of Marburg, Germany. He studied chemistry at the University of Marburg and earned his doctorate there in 1988. After a postdoctoral stay with D. Pearson and H.-W. Schmidt in Santa Barbara, he returned to Marburg, where he completed his habilitation in macromolecular chemistry in 1995. In the same year, he took upa professorshipat the University of Mainz, and in 2000, he became Professor of Macromolecular Chemistry in Marburg. His research interests include the classical synthesis of monomers and polymers, the synthesis of functional polymers, nanotechnology, as well as the applications of polymers in optics, electronics, and medicine.

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