Helga Kuhse, former Director of the Centre for Human Bioethics at Monash University, Melbourne, is now Senior Honorary Research Fellow at the Centre. She is author and co-author of several books including Caring: Nurses, Women and Ethics (Blackwell 1996), Willing to Listen – Wanting to Die (1995), Individuals, Humans and Persons: Questions of Life and Death (with Peter Singer, 1994). She is the co-founder of the Blackwell journal Bioethics and is co-editor of the accompanying volume A Companion to Bioethics (Blackwell 1999).

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 nonfiction. He was the foundation president of the International Association of Bioethics.