In Clive Cussler’s thriller Inca Gold, a crucial clue in an international treasure hunt is encoded in an ancient tangle of knotted, colored strands. Using a computer to identify patterns, an expert ...

Fairy knots: Sounds like one of 2024's biggest hair trends, right? Not so much—and those who know the truth understand they're as pesky and mischievous as their namesake. “Also known as single-strand ...