New platform seeks to support global cities in their efforts to reduce air pollution, cut carbon emissions, and improve public health
Mayor of London wants capital's ultra-low emissions zone to be extended to cover all London by 2023, as Greater Manchester mayor submits fresh vision to tackle pollution in North West
Over 4.2 million people die as a result of air pollution every year, but governments are still spending more supporting fossil fuel projects than they are tackling dirty air
Ban Ki Moon's call comes as a new report from the Clean Air Fund calls for greater collaboration between philanthropic and government-funded efforts