Thick, toxic smog has once again enveloped northern India and eastern Pakistan just days before the start of Diwali, a Hindu festival typically celebrated with fireworks that each year sends air quality plummeting.
Diwali, the Hindu festival of lights, is set to begin Thursday – a five day celebration during which people gather with their families, feast and set off firecrackers, in some cases in defiance of local bans, further exacerbating air pollution.
Source: CNN