Today in 1964, Dorothy Hodgkin became the first British woman to be awarded the Nobel Prize in Chemistry for determining the molecular structure of penicillin and vitamin B12.  She became only the second woman to receive the Order of Merit after Florence Nightingale, the first woman to receive the Copley medal in 1976 from the Royal Society, and was appointed Chancellor of Bristol University serving 1970-88.  Dedicating much of her later life to social activism, Hodgkin was president of the Pugwash Conferences on Science and World Affairs between 1975 and 1988. Seeking peaceful progress toward international development and security, she accepted the Lenin Peace Prize in 1987 in recognition of her humanitarian ambition