Michael and John are thrilled to have Professor Foster on the podcast. He brings his deep scientific knowledge and understanding of circadian photobiology. Russell tells us about his discovery of the third photoreceptor in the eye for which he got a lot of pushback from the scientific community in the 90’s. They don’t push back anymore. Professor Foster is the Head of Oxford’s Nuffield Laboratory of Ophthalmology, the founder and Director of the Sleep and Circadian Research Institute and is a Fellow of Brasenose College Oxford. His research addresses how circadian rhythms and sleep are generated and regulated and what happens when these systems fail as a result of societal pressures, ageing and disease.