The Big Picture: Pollution Alert

Delhi and Varanasi are among 14 Indian cities that figured in a list of 20 most polluted cities in the world in terms of PM2.5 levels in 2016, data released by the WHO showed. The WHO data also said that nine out of 10 people in the world breathe air containing high levels of pollutants. On this edition of The Big Picture we discuss how to deal with the pollution problem?

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