Arts
EPISODE 5 Marcus du Sautoy, Professor for the Public Understanding of Science at the University of Oxford, has the kind of imagination which draws on complex mathematics, music, science and literature simultaneously. On this walk through a North London park, Marcus and Charlie cover both literal and imaginative ground - and one of them gets lost in the marshes. Marcus with one of his beloved yellow notepads Tree no. 47 - Marcus's tree of the day