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Ground-level ozone pollution in Delhi-NCR in March-April highest in 4 years: CSE
World Ozone Day 2019: Dirty air from Gangetic plains, central India messing up the ozone neighbourhood
Ozone pollution from Asia isn't well understood, but may be damaging Arctic plants
Delhi, NCR hit alarming levels of Ozone pollution; 77 percent of days in May exceed CPCB prescribed limits
