On 24 March 2020 Prime Minister Modi ordered India’s population of 1.3 billion into lockdown for 21 days. All construction activities, public transport and industry were halted. India is the second-largest country in the world by population (after China) so this was the largest lockdown of all.
The World Health Organization (WHO) has estimated that about 3 million people die every year from conditions related to poor air quality. Air pollution is a problem in all regions of the world, but people living in cities in low-income countries are most at risk.
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