Add Yahoo as a preferred source to see more of our stories on Google. Long before Spanish colonization, the indigenous people of Peru kept track of important dates and numbers, and perhaps even ...

Before smartphones, spreadsheets, or even written alphabets as we know them, the Inca appear to have managed information in a way that still feels surprisingly advanced. Their system, known as quipu, ...

Long before Spanish colonization, the indigenous people of Peru kept track of important dates and numbers, and perhaps even stories, using a mysterious coding system of strings and knots called a ...