Introduction to bioinorganic chemistry, Jan Reedijk; introduction to homogeneous catalysis, R.A. Sheldon; relationships between enzymatic and heterogeneous catalysis, Edward I. Steifel; oxidative polymerization of phenols and thiophenols catalyzed by metal complexes - Laccasse-like reactions as a model, Eishun Tsuchida and Kimihisa Yamamoto; catalysis by nitrogenases and synthetic analogs, David J. Evans et al; catalysis by molybdenum-cofactor enzynmes, Robert S. Pilato and Edward I. Steifel; catalysis by nickel in biological systems, Richard Cammack; the two B-12 cofactors - involvement of the cobalt centre in homolytic and heterolytic processes, Luigi G. Marzilli; formation structure and reactivity of copper dioxygen complexes, Kenneth D. Karlin et al; polynuclear manganese enzymes, G. Charles Dismukes; oxygen activation at nonheme iron centres, Lawrence Que Jr; dioxygen activation at heme centres in enzymes and synthetic analogs, Daniel Mansuy and Pierrette Battioni; vanadium bromoperoxidase, Alison Butler; metalloenzymes with a quinone cofactor, Johannis A. Duine and Jaap A. Jongejan; future developments, Jan Reedijk.