While excavating an Inca outpost on Peru’s southern coast, archaeologist Alejandro Chu and his colleagues uncovered some twisted surprises. In 2013, the scientists were digging in one of four rooms ...

This looped and knotted section of cords is not only beautiful, it’s also a 500-year old mathematical tool. “I’d love to know what the deal was with the Incan knot counting system,” commenter Sajanas1 ...

A class action lawsuit has forced Apple to start a cord replacement program for frayed Macbook power adapters -- something frustrated Mac owners would have appreciated years ago. But now Apple wants ...

Although the knotted cord texts known as khipus have been created in the Andes for over a millennium (ca. AD 950–1950), their historical philology has been little understood. This study, based on ...