Hong Kong has commissioned consultancy company Ove Arup to investigate how the city’s Air Quality Objectives should be changed and to collect public opinion on this issue before November 30. There’s no time to waste. Please sign up below to add your voice to those who are calling on the Hong Kong government to start grading air quality with the same standards that the World Health Organisation uses, to commit to adopting the most stringent air quality standards, and to draw up a plan with a firm timetable that will ensure that Hong Kong people can start breathing clean and safe air.