Take a look at these four knots, which may look similar but are all distinct. Which knot would be hardest to undo if you pulled on the two long ends of its ropes? Rank them in order from weakest to ...

One example is the reef knot (top) vs. the grief knot (bottom). One is considerably stronger than the other. What does this mean, exactly? According to researchers, people were consistently unable ...

For example, the reef knot is the strongest knot in existence, while the grief knot can be unravelled with a gentle nudge. The results revealed that the participants were consistently unable to ...

A short paddle north from Cardiff reef, you'll find another pack of surfers in the water, probably sitting shoulder to shoulder in a tight knot. This is Suckouts. It's a very different wave than ...