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21/10/2013 GMT

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Professor of circadian neuroscience Russell Foster on how light controls our wellbeing

Professor of circadian neuroscience Russell Foster on how light controls our wellbeing, from jet lag to serious mental health problems.

Russell Foster, professor of circadian neuroscience at Oxford University, is obsessed with biological clocks. He talks to Jim al-Khalili about how light controls our wellbeing from jet lag to serious mental health problems. Professor Foster explains how he moved from being a poor student at school to the scientist who discovered a new way in which animals detect light.  

Image: Russell Foster Copyright: BBC

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