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Urban air quality less improved by COVID lockdowns than first believed

India New Delhi India gate pollution

Rome, Italy Thomson Reuters Foundation Lockdowns during the first wave of COVID-19 had a much smaller impact on urban air quality than first expected, a study of 11 global cities, from Wuhan to New York, found on Wednesday. As millions stayed home, concentrations in the air of nitrogen dioxide (NO2) – a key pollutant emitted […]