What does it mean when open-source data show that huge populations have moved? Natural disaster? An attack? Relocation of children, forced passportization? Non-classified satellite imagery, cell phone photos, video, GPS and other puiblicly available information is critical to modern diplomacy and democracy. Susan Wolfinbarger, geographer, data scientist and the vision behind the Conflict Observatory at State's Bureau of Conflict and Stabilization Operations, walks us through her dream: big data saves lives. Welcome to 21st Century diplomacy's newest tool.