He leads the Information Visualization research group in the Center for Human-Computer Interaction, and directs the GigaPixel Display Laboratory, one of the most advanced display and interaction facilities in the world. He was General Chair of the IEEE Information Visualization (InfoVis) Conference and Associate Editor of IEEE Transactions on Visualization and Computer Graphics. He was awarded Faculty Fellow of the College of Engineering at Virginia Tech. He regularly teaches graduate courses on Information Visualization and undergraduate courses on human-computer interaction. His research expertise is in human-computer interaction, information visualization, evaluation methods, and large high-resolution displays.