Concerned about children's health

India's capital New Delhi has ordered all schools to switch to online learning from Monday, November 18, until further notice as toxic smog worsens, in a bid to ease a health crisis gripping one of the world's largest cities. Levels of PM2.5, a small, cancer-causing pollutant, in India's capital New Delhi, were 57 times the World Health Organization's maximum safe limit on Sunday evening, while levels were around 39 times the safe limit on Monday morning, with thick, pungent smog blanketing the city. สล็อตเว็บตรง