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Officials at Nepal's only international airport in Kathmandu said poor visibility, which was down to 1,000 metres on Monday, widely disrupted flights.
India was home to 35 of the world's 50 most polluted cities, according to IQAir's 2020 World Air Quality Report, which gathered data for 106 countries.
Zero-emission charging station improves air quality, challenges related to EV charging infrastructure, power grid management and integration of renewable energy.
In India, the world's third biggest emitter, emissions rose above 2019 levels from last September as economic activity increased and restrictions were relaxed.
Climate diplomats and campaigners believe the US will be turning its promises into action by committing to reach net zero emissions by or before 2050.
In 2019, 1.67 million lives were lost in India as a whole due to toxic air, according to The Lancet.
For the study, the researchers included 503 patients without cardiovascular disease or cancer who had undergone imaging tests at MGH for various medical reasons.
It is important to include nasal sanitisation in your daily hygiene routine - not only when you come home but even if you haven't stepped out at all.
China is the world's biggest carbon emitter followed by the US, India and the EU.