Andrew J. Hanson received the BA degree in chemistry and physics from Harvard College in 1966 and the PhD degree in theoretical physics from MIT in 1971. He is an Emeritus Professor of Computer Science in the School of Informatics and Computing at Indiana University, Bloomington. He worked in theoretical physics from 1971 until 1980, when he began working in machine vision, graphics, and visualization, first with the perception research group at the SRI Artificial Intelligence Center, and then at Indiana University from 1989 until his retirement in 2012. He served in the Computer Science Department as Graduate Program Director from 1996 to 2002, and as Department Chair from 2004 to 2009. He continues to be actively involved in research, and his interests include topics such as computer graphics, perception, navigation and collaboration in virtual environments, the visualization of abstract concepts in mathematics and physics, quantum computing, bioinformatics, virtual astronomy, haptics, the exploitation of quaternions and high-dimensional spaces, and multitouch handheld device interfaces that support such visualization environments. He is the author of "Visualizing Quaternions" (Morgan-Kaufmann 2006), the designer of widely used Calabi-Yau space images representing the hidden dimensions of string theory, and designer of the iPhone App "4Dice" that supports interactive exploration of 4D space. He is a member of the IEEE Computer Society, ACM Siggraph, the American Mathematical Society, the American Physical Society, and Sigma Xi.