Inca Cords May Unlock 500-Year-Old Weather Data
In a remote village high in the Peruvian Andes, there is a 68-meter-long (224-foot) knotted cord that is the biggest of its kind ever found. Khipus were the Inca Empire’s advanced way of keeping records. They encoded everything from tax records to poetry. But researchers now think they might have something even more amazing: a ...
