The Croonian Lecture 2016, our premier lecture in the biological sciences, was this year presented by Professor Enrico Coen CBE FRS. He talked on how recent advances in 3D imaging, molecular genetics and computational modelling reveal the rules by which plants self-construct. Filmed: 6.30pm - 8.30pm on Tuesday 10 May 2016 at The Royal Society, London. royalsociety.org/events/2016/05/croonian-lecture/