Number 101 (Story #1), October 30, 1992 by Phillip F. Schewe and Ben Stein CARBON ONIONS , quasi-spherical nested fullerene structures as large as 47 nm, have been synthesized by Daniel Ugarte of the Federal Polytechnic School in Lausanne, Switzerland. He used the beam in a powerful electron microscope both to create and to image a myriad of carbon objects. The largest have 70 concentric shells. The work of Ugarte and others seems to demonstrate that the most stable allotrope of carbon (at least for small objects) is not planar graphite but closed shells, owing chiefly to the need for satisfying the dangling bonds at the edge of the network. (Nature, 22 October 1992.)