Damien Keown (born 1951) is a prominent bioethicist and authority on Buddhist bioethics. Helga Kuhse is an Australian utilitarian philosopher and bioethicist. Dan W. Brock (born 1937) is an American philosopher, bioethicist, and professor emeritus. Morgan Carpenter is a bioethicist, intersex activist and researcher. George P. Dvorsky (born May 11, 1970) is a Canadian bioethicist, transhumanist and futurist. Julian Savulescu (born 22 December 1963) is an Australian philosopher and bioethicist. Kerry Bowman is a Canadian bioethicist and conservationist based in Toronto, Ontario. Michael J. Reiss, FRSB FRSA (born 1960) is a British bioethicist, educator, and journalist. Rorty divorced his wife and then married Stanford University bioethicist Mary Varney in 1972. Bioethicist Morgan Carpenter also describes intersex bodies as "queer bodies". The procedure was conceived by Calum MacKellar, a Scottish bioethicist. Bostrom and bioethicist Julian Savulescu also published the book "Human Enhancement" in March 2009. He is the brother of bioethicist Paul Root Wolpe. He has also worked extensively with patients as a clinical bioethicist. This view has been challenged by such bioethicist critics as Nicholas Agar.