Rationale of this article An account of the Fourth International Archean Symposium (4IAS), which took place in Perth in September 2001, has already appeared in TAG (Dunphy & Wyche, 2001). At that meeting I agreed to act as a coordinator for the preparation of a more extensive general article covering all four symposia, by a … Continue reading The International Archean Symposia in Perth, Three Decades on: a Review by Dr Alec Trendall