A Software Engineer Is Using Drone Footage to Map Puerto Rico for Relief Efforts

Ever since Hurricane Maria devastated Puerto Rico, a grassroots network of volunteers has been helping the island get back on its feet in an unexpected way. They’re using satellite images to create digital maps of buildings and roads that relief workers with FEMA and the Red Cross are using to reach those in need.

Why Thousands of People Around the World Are Mapping Puerto Rico's Buildings and Streets 

PHILADELPHIA—In a brightly-lit seminar room above a gym at the University of Pennsylvania, Girmaye Misgna stands in front of a large digital display, pointing to a bird’s eye view of a house nestled among the trees. The two dozen volunteers packed around the long white table watch attentively, their own laptop…