Studies show that exposure to light after dusk is unnatural, and may be detrimental to health. Do we need 24/7 garages, supermarkets and TV – or should the city that never sleeps be put to bed?
Astronomer Dr Jason Pun of the Hong Kong University department of physics has been studying light pollution for nearly a decade. He says people often ask him if he’s crazy. “‘Hong Kong is supposed to be bright,’ they say. ‘Why are you even talking about light being some kind of pollution?’”