Gabriele Genge is professor and chairholder of Art History and Theory at the University Duisburg-Essen (Germany). Her researches focus on visual culture from 18th to 21st centuries, on art and ethnography, modernism and postcolonialism. Angela Stercken (PhD) is art historian, curator, and writer focusing on art from the 19th to 21st centuries, exploring subjects such as the theory of image, the history of exhibition and the museum, the theory of art, space and technology, contemporary conceptual and digital art and transcultural processes.