Ramanujan, dream of the possibleOn the 100th anniversary of Srinivasa Ramanujan being elected fellow of the Royal Society Ken Ono tells us about his work.
Plus Advent Calendar Door #17: Protecting the nationThe furore around the MMR vaccine and autism has shown that vaccination can be an emotive issue. We talk to an expert about the math used to make sure it's safe.
Plus Advent Calendar Door #16: The puzzle of timeTime is a problem, not just for you and me, but also for philosophers. What exactly is time? Why does it have a direction? And was there a beginning of time? Find out more in this podcast.
Plus advent calendar door #15: Sexual statisticsHow many times do we think of it a day? How many times we do it? And with how many people? Find out about the stats of sex with David Spiegelhalter.