A resourceful archaeologist has made the stunning discovery of 27 new ancient Mayan sites—all without ever leaving his desk. Takeshi Inomata, an researcher at the University of Arizona, made his discoveries using freely accessible light detection and ranging maps (LiDAR for short) published in 2011 by the National Institute of Statistics and Geography in Mexico, according to the New York Times. The organization created the map, which surveys 4,400 square miles of land in the Mexican states of Tabasco and Chiapas, with an eye toward serving businesses and researchers. An even though the imagery is low resolution, it still suited...