Baruch S. Blumberg was a biomedical researcher at the Fox Chase Cancer Center, in Philadelphia, PA, during the second half of the 20th century. His research into Australia Antigen and the Hepatitis B Virus led to a vaccine for the virus and a share of the 1976 Nobel Prize in Physiology or Medicine. Dr. Blumberg also served as chief of the Geographic Medicine and Genetics Section at the NIH (1957-1964), Master of Balliol College (1989-1994), the first Director of the NASA Astrobiology Institute (1999-2002), and President of the American Philosophical Society (2005-2011).