![]() When 5–6 users flag a site as containing potential looting, Parcak’s team will step in to study it in more detail. Users look at tiles one at a time, and mark whether they see anything in the image that could be a looting pit. ![]() This large search area has been divided into 20 million tiles, each about the size of a few city blocks. “Expedition Peru” has users searching more than 250,000 square kilometers of highlands and desert, captured in high-resolution satellite imagery provided by DigitalGlobe. “I had no idea we’d complete this many tiles so soon.” Working together, the GlobalXplorer community has just finished searching the 5 millionth tile in Peru, the first country the platform is mapping. ![]() It’s the culmination of Sarah Parcak’s TED Prize wish and, already, more than 32,000 curious minds from around the world have started their training, learning to spot signs of ancient sites threatened by looters. GlobalXplorer, the citizen science platform for archaeology, launched two weeks ago. Peru is home to many archaeological sites - and citizen scientists are mapping the country with GlobalXplorer. Photo: Design Pics Inc./National Geographic Creative ![]() Morning clouds reveal Machu Picchu, ancient city of the Incas. ![]()
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