Brad Pillans University of Toronto, Toronto, ON, Canada Australian National University, ACT, Australia...Henry Schwarcz McMaster University, Hamilton, ON, Canada David J A Evans University of Durham, Durham,...Road, Dalhousie University, Halifax, NS, Canada BC, Canada Charles Harris Cardiff University, Cardiff...Dan Smith University of Victoria, Victoria, BC, Canada FOREWORD A t these times, when we are all...short-lived events that take place only rarely in any one region. The interval between major events, such as volcanic |