Heavily polluted India launches national air quality index
Heavily polluted India launches national air quality index
- A World Health Organization (WHO) study of 1,600 cities released in May ... Thirteen of the dirtiest 20 cities worldwide were in India, the WHO said.
- A World Health Organization (WHO) study of 1,600 cities released in May ... Thirteen of the dirtiest 20 cities worldwide were in India, the WHO said.