A new study suggests that fine particulate matter (PM1) in Delhi may be absorbing moisture from the humid winter air, leading to an underestimation of pollution levels by up to 20%. The research, ...

Delhi's air pollution is more severe than estimated due to the undercounting of PM1 pollutants by up to 20%, exacerbated by ...

New Delhi's air pollution is more severe than previously estimated, with particles absorbing atmospheric water vapor, leading ...

A Swiss company that tracks global air quality has named Delhi the world’s most polluted national capital for the sixth year ...

Chad, in central Africa, is the world’s most polluted country, while California has the worst air pollution in North America, ...