Zan Boag interviews Peter Singer on the ethical issues that arise from travelling. Peter Singer AC is Professor of Bioethics at Princeton University, and a Laureate Professor at the Centre for Applied Philosophy and Public Ethics at the University of Melbourne. His books include How Are We To Live?, The Life You Can Save and The Most Good You Can Do. In 2012 he was named a Companion of the Order of Australia for his services to philosophy and bioethics. He was voted one of Australia’s ten most...