His current research interests include perceptual and cognitive issues in map animation (in particular, 3D maps), interface design for maps, developing Web-based mapping tools and services, and critical cartography/GIScience. Mark also serves on the editorial board of Cartographica, CaGIS, Cartographic Perspectives, and Blackwell Compass and is an active member of the ICA Commission on Visualization and Virtual Environments, the Cartography Specialty Group of the AAG, and the North American Cartographic Information Society.