David Fennell teaches and researches mainly in the areas of ecotourism and tourism ethics. He has published widely in these areas, including sole authored books on ecotourism programme planning, a general text on ecotourism, and tourism ethics (he has edited two other books). Fennell is the founding Editor-in-Chief of the Journal of Ecotourism, and is an active member on editorial boards of many academic journals.

David Cruise Malloy, PhD, is a professor of applied philosophy in the Faculty of Kinesiology & Health Studies at the University of Regina, Canada. His primary research focus is in the realm of ethical decision-making, leadership, and ethical climate in healthcare and organisational contexts. Malloy's research is funded by both the Social Science & Humanities Research Council of Canada and the Canadian Institutes for Health Research. He has authored numerous articles in ethics and ontology. This is his fourth text.