Reuters: India on Thursday rejected the findings of a World Health Organisation (WHO) study that ranks New Delhi as the world's worst city for air pollution, with government scientists saying the U.N. agency had overestimated levels in the capital.
A WHO study of 1,600 cities released on Wednesday found air pollution had worsened since a smaller survey in 2011, putting city-dwellers at a higher risk of cancer, stroke and heart disease.
The study found New Delhi to have the dirtiest air, with an annual...