Getting rid of chemical weapons. Incinerator under fire. Tying physical theory into stable knots Theorists have for the first time discovered a way to generate stable knotlike structures as solutions of the equations of field theory, which is widely used to describe many kinds of physical systems. Stable knot-like structures in classical field theory. Perkins, W. 1997.
Physicists learn to tie a knot.
Tying knots to tubular geometry, DNA loops. Unknotting a tangled tale. Vergano, D. 1996. The splintered universe. A famous Chinese dinosaur fossil does not appear to have feathers, as had been previously reported.