In this episode, we focus on organic chemistry by talking to Professor AnnMarie O'Donoghue, a professor of organic and biological chemistry at Durham University. In this episode, we talk about her background and undergraduate teaching. At the end of this episode, we take you through the concept of isotope labelling in the determination of organic mechanisms. The handout for this episode along with a transcript can be found here: http://bit.ly/cau3-4