Witness to Phenomenon articulates a fresh examination of the German Group Zero-Heinz Mack, Otto Piene, and G nter Uecker-and other new tendency artists, who rejected painting and introduced new art media in postwar Europe. Group ZERO evolved into a network across Europe- Amsterdam, Milan, Paris, and Zagreb. This pan-European affiliation of artists generated a continuous stream of innovative artistic statements through the 1960s, incorporating...