Facebook doesn't only know what its 2 billion users "Like." It now knows where 7.5 billion humans live, everywhere on earth, to within 15 feet. From a report: The company has created a data map of the planet's entire human population by combining government census numbers with information it's obtained from space satellites, according to Janna Lewis, Facebook's head of strategic innovation partnerships and sourcing. The mapping technology, which Facebook says it developed itself, can pinpoint any man-made structures in any country on earth to a resolution of five meters. Facebook is using the data to understand the precise distribution of humans around the planet.