Click here for an interactive Reuters graphic https://tmsnrt.rs/2GORiU9 on the link between Delhi's pollution and falling temperatures and wind speeds. The World Health Organization said this year India was home to the world's 14 most polluted cities. Pollution levels were exacerbated because of fumes from vehicles, pollutants from coal-fired power plants and industries, as well as smoke from fires being burned to keep people warm. In October and November, crop residue burning in the neighbouring states of Haryana and Punjab also contributed to air pollution. In India, air pollution claimed 1.24 million lives in 2017, or 12.5 percent of total deaths, according to a study published in Lancet Planetary Health this month.

Source: The Star December 31, 2018 15:00 UTC