India biggest emitter of sulphur dioxide.

According to recently released report by Greenpeace India, India is the largest emitter of sulphur dioxide (SO2) in the world. The findings of report were based on data obtained from NASA’s Ozone Monitoring Instrument (OMI) satellite.
This is because majority of coal-based power plants in India lack flue-gas desulphurisation (FGD) technology to reduce air pollution.