The World Health Organization (WHO) has once again sent out the grim reminder that all is not well with the global state of air. The latest and updated urban air quality database for 2016 released by the WHO, shows that as many as 9 out of 10 people breathe air that breaches safe limits. As many as 7 million people are dying every year due to ambient and household air pollution as exposure to fine particles that go deep into the lungs and cardiovascular system, cause stroke, heart disease, lung cancer, chronic obstructive pulmonary diseases and respiratory infections. But the most disquieting fact is that among the worst affected cities in the world, Indian cities top the list.
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