Inca society kept records by encoding information into knotted cords called khipu. A new analysis of hair woven into these ...

Knotted string values signified units of produce, not individual chili peppers or peanuts, Urton and Chu argue. Several rectangular, roughly 30-meter-long Qolqawasi rooms served as receiving areas ...

Eventually, studying 3-D knotted magnetic fields like those potentially present in ball lightning might help scientists devise better ways to control plasmas within future fusion reactors for ...