Recent studies put the percentage of Kolkata’s inhabitants suffering from respiratory disorders at 70 percent. So Deutsche Welle asked the city's mayor, Bikash Ranjan Bhattacharya, during his recent visit to Bonn about the reason for such extreme levels of air pollution.
https://p.dw.com/p/Ls43
The metropolis on the Ganges is one of the world's most polluted citiesImage: AP
