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Left: Volunteers take part in a "mapathon" organized by the Humanitarian OpenStreetMap Team. Right: OpenStreetMap contributors pinpoint dump sites along rivers and waterways in Dar es Salaam in an effort to predict and prevent flooding in the Tanzanian city. Humanitarian OpenStreetMap Team hide caption

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Humanitarian OpenStreetMap Team

Patrick Meier (center, in cap) flies a drone in Nepal after the earthquake in 2015. Meier and his team were able to to capture detailed images of damage around the capital, Kathmandu. He believes using this technology will make crisis mapping even more effective for disaster response. Courtesy of Patrick Meier/WeRobotics hide caption

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Courtesy of Patrick Meier/WeRobotics

When Disaster Strikes, He Creates A 'Crisis Map' That Helps Save Lives

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