"Pollution is not just caused by biomass burning or vehicles," he says.
"Dust being stirred up from the ground, coal and fly ash, materials burned at brick kilns and the large-scale burning of urban waste are also contributing to the problem.
And much of this is still not being stopped."
"Pollution is not just caused by biomass burning or vehicles," he says. "Dust being stirred up from the ground, coal and fly ash, materials burned at brick kilns and the large-scale burning of urban waste are also contributing to the problem. And much of this is still not being stopped."
