Acknowledging the long-hidden truth that mathematicians are also scientists, Jim al-Khalili interviewed Ian Stewart yesterday for his Radio 4 programme, *The Life Scientific*. The show features a different scientist in each episode, and Professor al-Khalili talks to them about their life and work, what inspires and motivates them, and how their research may benefit mankind.

Professor Ian Stewart (not to be confused with geologist Professor Iain Stewart) is a professor at Warwick University, and is involved with a lot of maths outreach, including having written numerous popular maths books; he gave the Royal Institution Christmas Lectures in 1997. His research interests are in dynamical systems, bifurcations, pattern theory and biomathematics. He also writes science fiction books, and has collaborated on the *Science of Discworld* books, based on Terry Pratchett’s series.

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Listen again to the episode of The Life Scientific, originally broadcast 17/9/13 – available up to a week afterwards.

Podcast – available indefinitely.