Hong Kong must raise the bar when it comes to cleaning up its act on air quality, top scientist says

Hong Kong’s five-yearly review of its air quality objectives should not be “feasibility led” but “public health driven”, a veteran air scientist has suggested. Dr Alexis Lau Kai-hon said the city needed to do more than just pursue broad policies that ensured it could “pass the exam”, and instead set progressive health-based targets that would motivate policymakers to constantly do more. “If someone tells you all you need is a pass, all you’...