Roland Piquepaille writes: "UCLA chemists have built a molecular Solomon's knot at the nanoscale. The Solomon's knot is composed of two rings that interlace each other four times, with alternating crossing points that go over, under, over and under as one traces around each of the rings. This nano-version is roughly 2 nanometers high by 1.2 nanometers wide. And what would it be useful for? The project's leader offers a refreshing answer: "There is often a connection between the beauty and elegance of a chemical structure and its potential usefulness, and this Solomon knot structure is quite beautiful and elegant." Good luck to her! Read more for additional details and a picture."