Can we call it a "world map" if it's missing a billion people? | Rebecca Firth

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Want to help map the world? Community builder Rebecca Firth explains how the Humanitarian OpenStreetMap Team (HOT) is using open-source software powered by volunteers to put one billion people on the map in the next five years. (This ambitious plan is a part of the Audacious Project, TED's initiative to inspire and fund global change.)

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