Anne Skeldon is at the World Sleep Congress in Prague, Czech Republic, this week (7-11 October). The congress is hosting 2400 people interested in sleep including medics, psychologists, mathematicians, and sleep scientists. Anne organised and chaired a session on: “Environmental challenges: the impact of artificial light on sleep and circadian biology“, and a link to the session is here. In the session she presented joint work with Derk-Jan Dijk (Surrey Sleep Research Centre) and Andrew Phillips (Harvard Medical School) on “The interaction of light and social constraints with sleep and circadian biology: a modelling approach“. Anne also presented a poster on “Living in an urban lighting environment: should we change school start times?” and the abstract can be found here.