Editor's Remark: In the paper "Geometry of Fullerenes" published in September 1998,  I posed the question "Are Fullerenes knotted?", and at ISIS-Symmetry Congress in Haifa (1999) even suggested a new  term "knotohedra", meaning "knotted polyhedra". Lightweight  polyhedral sculptures by Frederick G. Flowerday are probably the most beautiful math/art answer to that question.

Slavik Jablan