World Economic Forum: “…Two weeks after the nationwide lockdown was announced on March 23 in the UK, NO₂ pollution in some cities fell by as much as 60% compared to the same period in 2019. NASA revealed that NO₂ pollution over New York and other major metropolitan areas in north-eastern USA was 30% lower in March 2020, compared to the monthly average from 2015 to 2019. Most NO₂ comes from road transport and power plants, and it can exacerbate respiratory illnesses such as asthma. It also makes symptoms worse for those suffering from lung or heart conditions. NO₂ emissions have been a particularly thorny problem for Europe, with many countries in breach of EU limits…”
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