Of the many puzzles mathematicians ponder, one is new ways to tie knots. "There are more than six billion different types of knots that have been tabulated by mathematicians. Six billion." David Leigh ...

Q I am new to wearing ties. I know there are different kinds of tie knots (I see knotting directions for three), but I don't know if any are more right with certain clothes than with others. A You are ...

Physicists at CU Boulder have gone to creative lengths to earn their scouting merit badges for knot-tying. In a study published today in the journal Science, a team of researchers discovered a new way ...