33 of the largest cities in the world have levels of particulate matter four times higher than the World Health Organisation’s guidelines of 10 ug/m3. The worst polluted cities in the world are all in Asia, with China, India and…

33 of the largest cities in the world have levels of particulate matter four times higher than the World Health Organisation’s guidelines of 10 ug/m3. The worst polluted cities in the world are all in Asia, with China, India and…
Half of world’s people lack access to air quality data, hampering efforts to tackle one of biggest public health threats There is a huge global inequality in access to information about air quality, a new report released today by OpenAQ, an international…