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Title: Nitrogen dioxide levels fell by 70% in coronavirus lockdown in Delhi: UN
Source:Business Standard
Date:28 July 2020

Levels of nitrogen dioxide fell by more than 70 per cent during the lockdown in New Delhi, a UN policy brief said on 28 July 2020, warning that the environmental gains could be temporary if the cities re-open without policies to prevent air pollution and promote de-carbonisation. The UN Secretary-General's Policy Brief on 'Covid-19 in an Urban World' said that with an estimated 90 per cent of all reported Covid-19 cases, urban areas have become the epicentre of the pandemic. It also pointed out that several new scientific studies suggest that poor air quality is correlated with higher Covid-19 mortality rates. The size of their populations and their high level of global and local interconnectivity make them particularly vulnerable to the spread of the virus.

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