“In December 1873, London was blanketed for a week in a yellow fog so thick that people could not see their feet. Some 780 people died.
“…..roughly 6.5 million people died from both indoor and outdoor air pollution in 2015. Two million of them died in India. Deaths from outdoor air pollution have risen to 4.2 million in 2015 from 3.5 million in 1990…..”
“….In England…in 1952…..another heavy smog episode — this time from coal-burning fireplaces and cooking ranges — left as many as 12,000 dead…..”
