Europe’s politicians have moral responsibility to tackle air pollution, says WHO environment director

Maria Neira highlights health impacts of dangerous pollution levels after Guardian investigation revealed scale of crisis

Politicians across Europe have a moral responsibility to urgently tackle the continent's dangerously polluted air, according to Maria Neira, the director of the World Health Organization's department of environment, climate change and health.

On Wednesday a Guardian investigation revealed that Europe is facing a severe public health crisis, with almost everyone on the continent living in areas with dangerous levels of air pollution.