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1 William Wallace Covington is Emeritus Founding Executive Director of The Ecological Restoration Institute and Emeritus Professor of Forestry at Northern Arizona University, Flagstaff AZ, USA. w.wallace.covington@nau.edu.
2 Stephen Pyne is an emeritus professor at Arizona State University, Tempe, AZ, USA, and a fire historian. stephen.pyne@asu.edu.
1 William Wallace Covington is Emeritus Founding Executive Director of The Ecological Restoration Institute and Emeritus Professor of Forestry at Northern Arizona University, Flagstaff AZ, USA. w.wallace.covington@nau.edu.
2 Stephen Pyne is an emeritus professor at Arizona State University, Tempe, AZ, USA, and a fire historian. stephen.pyne@asu.edu.