MS, MIT Media Lab; developed the Programmable Brick, a research prototype for LEGO Mindstorms. Helped develop planetary rover software, Intelligent Robotics Group, NASA Ames. Founded/co-founded two successful technology companies. Currently, Senior Systems Scientist, Carnegie Mellon University. Researches for the Explorables project, developing ways to interactively explore and understand large datasets and complex systems, including air and water quality, personal health, and employment and economic trends. Visiting Scientist, Google's Earth Engine team; helps research and develop time-lapse explorable maps.