Peter Singer is currently Ira W. DeCamp Professor of Bioethics at the University Center for Human Values at Princeton University and Laureate Professor at the Centre for Applied Philosophy and Public Ethics at the University of Melbourne. He is the author or editor of more than forty books, including Animal Liberation (1975), Rethinking Life and Death (1996) and, most recently, The Life You Can Save (2009). In 2005, he was named one of the 100 most influential people in the world by Time magazine.