Lalitesh Katragadda: Making maps to fight disaster, build economies

As of 2005, only 15 percent of the world was mapped. This slows the delivery of aid after a disaster — and hides the economic potential of unused lands and unknown roads. In this short talk, Google's Lalitesh Katragadda demos Map Maker, a group map-making tool that people around the globe are using to map their world.