Peter Singer is Ira W. DeCamp Professor of Bioethics at the University Center for Human Values, Princeton University. He is the author of "Animal Liberation," first published in 1975, and is widely credited with triggering the modern animal rights movement. His "Practical Ethics" is one of the most widely used texts in applied ethics, and "Rethinking Life and Death" received the 1995 Australian National Book Council's Banjo Award for non-fiction. He is the editor of "A Companion to Ethics" (Blackwell 1991) and was the foundation president of the International Association of Bioethics.