Today a new paper was published in Chem. Eur. J. on the reactivity of fullerenes, and how this is determined by the fullerene isomer and the nature of the encapsulated cluster. S. Osuna, R. Valencia, A. Rodríguez-Fortea, M. Swart, M. Solà, and J.M. Poblet “Full Exploration of the Diels-Alder Cycloaddition on Metallofullerenes M3N@C80 (M=Sc, Lu, Gd):