As access to data about his brain ultimately led to the detection and removal of a baseball-sized tumor last August, Steven Keating knows firsthand how powerful health data can be. Keating, an MIT graduate student, has open sourced much of his own health data on his personal website with the hope that it may help researchers and patients better understand cancer. His inspiring story, which blends equal parts curiosity and positivity, has been shared in MIT News, The New York Times, and BetaBoston, and he has given several talks on campus, including two at the KI.