Unhealthy ...

Delhi was listed as India's most polluted city Thursday as a weeks-long air quality crisis gripping northern India has shown ...

Residents in India's northern states woke up to another day of poor air quality on Tuesday, as a layer of dense fog shrouded ...

Whatever the causes of the smog, by one ranking Delhi was not just the most polluted city in the world, but “nearly five ...

In several areas of the city, pollution levels were more than 50 times higher than the World Health Organization’s ...