An amuse bouche before October’s more bombastic event, this TEDx Salon is a bite-sized version of the lecture series, focused on a single topic. For this outing, several experts will survey the subject of Longevity. Figure out how to optimize our ever-increasing lifespans (as some billionaires even dabble in notions of blood-fueled immortality). You’re going to be old for a long time. Better start planning now.