From HG Wells and Margaret Atwood to Battlestar Galactica, science fiction texts and tv series have long used birth control as a metaphor for the limits on individual freedom. New Generation Thinker Sarah Dillon, from the University of St Andrews, looks at the roles for women which science fiction has imagined and asks is sci-fi sexist? Recorded on Saturday 26th October 2013 in front of a live audience at Sage Gateshead as part of Radio 3's Free Thinking festival.