You can think of each one as a string that crosses over itself ... "My wife is always asking me to unknot her jewelry," Menasco jokes. Do knot theorists have any insight on preventing real-life ...

Urton, a member of Harvard's Department of Anthropology, has begun to solve the mystery surrounding the Incan artifacts known as "khipu," or "knots" in the Incan language of Quechua. These khipu, ...

It involves the study of mathematical knots, which differ from real-world knots in that they have no ends. You can think of each one as a string that crosses over itself a given number of times and ...