In 2001 Wyn Roberts celebrated both his 70th birthday and 50 years of working in surface science, to use the term surface science in its broadest meaning. This book aims to mark the anniversary with a contribution of lasting value. The book is divided into three sections: surface science, model catalysts and catalysis, topics in which Wyn has always had interests. The authors for each chapter were chosen from some of the many eminent scientists who have worked with Wyn in various ways. The authors have produced authoritative reviews of their own specialties which together result in a book with a combination of breadth and depth exploring the most recent developments in surface chemistry and catalysis in 2002. Since the early 1980s surface science has provided many revolutionary insights into catalysis to explain the complexities of the processes occurring on catalyst surfaces. There are many books on different aspects of both surface science and catalysis but this volume attempts to provide an authoritative survey of the whole area.