Copper and lutetium metal ions chaperone this molecular strand into a three-twist knot. Credit: Credit: Stuart Jantzen, Biocinematics It’s annoyingly easy to tangle your headphones into a mess of ...

"I work in construction, and we wanted to create a tool that would make it easier to run string line," said one of two inventors, from Lamont, Fla., "so we invented the TWINE VISE. Our design ...

TOKYO -- A simple knot, a lasso, a figure-eight knot and a bowline knot. These are just a few of the knots that can be tied by a robot developed at the University of Electro-Communications here.