Graphic detail | Blue skies turn grey

Air pollution is returning to pre-covid levels

This bodes ill for respiratory health

COVID-19 IS NOT all bad, as any city-dweller who stepped outside this year will have seen. The virus has killed hundreds of thousands of people and decimated economies around the world. But as GDP has fallen so has air pollution. This spring marked the first time in decades that residents of Jalandhar in northern India were able to see the snow-capped Himalayan mountains, 160km (100 miles) away.

This article appeared in the Graphic detail section of the print edition under the headline “Blue skies turn grey”

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