Daniel Kraft: Medicine's future? There's an app for that. Bill Joy: What I'm worried about, what I'm excited about. Eric Topol: The wireless future of medicine. Ellen Page- The Doctor Is In. Eric Dishman: Take health care off the mainframe. Dean Ornish on the world's killer diet. Dan Buettner: How to live to be 100+ Julian Treasure: Shh! Sound health in 8 steps. Ernest Madu on world-class health care.