David Lindenmayer is a Professor at The Australian National University. He has worked on the conservation of forests and their wildlife for more than 35 years. He has published 45 books and over 1100 scientific papers, and has broad interests in conservation biology, landscape ecology, vertebrate ecology, forest ecology and woodland conservation. He has received numerous awards and is a member of the Australian Academy of Science and an Australian Research Council Laureate Fellow. Richard Hobbs is Professor of Restoration Ecology at the University of Western Australia, where he holds an ARC Australian Laureate Fellowship, and leads the Ecosystem Restoration Laboratory.