This video is a visualization of the OpenStreetMap community’s response to the Haitian earthquake. Christopher Osborne explains: “In the video, each flash represents a new edit into OpenStreetMap, and this visualisation is a vivid picture of how much work was contributed by volunteers, following the quake. First the primary and secondary roads (green and red) are added and then smaller residential streets and then many other features such as the blue glowing camps of displaced people that emerge.” Via Mapperz.