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Air pollution returning to pre-COVID levels

Written by  Sunday, 14 March 2021 13:50
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Nitrogen dioxide concentrations over China

In early 2020, data from satellites were used to show a decline in air pollution coinciding with nationwide lockdowns put in place to stop the spread of COVID-19. One year later, as lockdown restrictions loosen in some countries and regular activity resumes, nitrogen dioxide levels are bouncing back to pre-COVID levels.

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