UDO SCHÜKLENK is Ontario Research Chair in Bioethics and Public Policy, Queen's University at Kingston, Ontario, Canada. He has held academic appointments in Australia, the UK, and South Africa, and is a long-serving Joint Editor-in-Chief of the journal Bioethics, the official publication of the International Association of Bioethics.
PETER SINGER is Ira W. DeCamp Professor of Bioethics, Princeton University, USA. He is best known as the author of Animal Liberation, widely considered to be the founding statement of the animal rights movement, and for his role in inspiring the growth of effective altruism.