Leaves come in many shapes and sizes, and often that variation is linked to how quickly they can acquire energy and use it. And we don't know how that variation is spread across vascular plants, so I am setting out to study their evolution.

My favourite research memory was from last year, when I was fortunate enough to go to Svalbard, in the High Arctic, and one evening, after a day of measuring photosynthesis we headed out for a midnight hike looking for fossils and it was spectacular to see how different the landscape was 50 million years ago.

My favourite research organism? All of the ones I haven't studied yet.