A group of scientists in Kyoto University, Japan, have recently made H2C60?, a hydrogen filled buckyball wich is a soccerball shaped grouping of 60 carbon atoms. They cut open the buckyball, inserted the H2 and sealed it using Oxygen, Sulfer, and Neon. The link is http://pubs.acs.org/cen/news/83/i03/8303notw6.html.