Prof Peter Singer (Princeton University) discusses the way in which our decisions about the kind of built environment we choose to create, and to live in, should take into account the interests of others, whether present or future, human or nonhuman.

Australian-born philosopher Peter Singer is frequently acknowledged as a major force in modern bioethics. Peter has taught at the University of Oxford, La Trobe University and Monash University, as well as holding several visiting appointments. He has been Ira W DeCamp Professor of Bioethics in the University Centre for Human Values at Princeton University since 1999, and since 2005 has also held the part-time position of Laureate Professor in the Centre for Applied Philosophy and Public Ethics at the University of Melbourne. Professor Singer first became well-known internationally after the publication of Animal Liberation. His other books include Practical Ethics, Rethinking Life and Death, How Are We to Live? and most recently, The Life You Can Save, His writings have appeared in more than 20 languages. In 2005 Time named him one of the 100 most influential people in the world and in 2011 he received the Ethics Award of the Giordano Bruno Foundation, in Germany.