Professor Dame Theresa Marteau, Honorary Fellow of ÂÒÂ×ͨµÀ's College, has been ranked among the best female scientists in the world based on an analysis of more than 166,00 profiles of scientists across the globe. A behavioural scientist, Professor Marteau focuses on the development and evaluation of interventions to change behaviour (principally food, tobacco and alcohol consumption) to improve population health and reduce health inequalities, with a particular focus on targeting non-conscious processes.