Gregory E. Pence, PhD, is an international expert on the ethics of human cloning. A year after the birth of the lamb Dolly in 1997, he wrote Who's Afraid of Human Cloning? and in 2004, Cloning After Dolly: Who's Still Afraid?. In 2000, he was the lone bioethicist to testify before Congress and the California Senate against bills that would have criminalized human cloning. He has talked about cloning humans at endowed lectures in Brazil, Switzerland, Australia, and on many North American campuses.

He has taught for 40 years at the University of Alabama at Birmingham (UAB), where he Chairs Philosophy. For 34 years, he taught a required course in Bioethics at UAB to 160 medical students, a course that discussed human cloning. His teams have won three national championships in college Ethics Bowls and he has won the two top teaching awards at UAB. His Medical Ethics has run seven editions over 25 years with McGraw-Hill. He has published over 60 op-ed essays in the New York Times, Birmingham News, The Wall Street Journal, The Los Angeles Times, and Newsweek, including many on cloning humans.