I wonder how Beijing compares to 18th and 19th century England or the United States. Seems almost like they are going through their own capitalist industrial revolution, judging by these pictures and accounts.
> So according to these rough calculations the great smog of 1952 probably had a PM2.5 of about 700 ug/m^3, quite similar to the current Shanghai smog, and lower than levels regularly reported in other Chinese cities.
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[ 2.8 ms ] story [ 14.5 ms ] thread> So according to these rough calculations the great smog of 1952 probably had a PM2.5 of about 700 ug/m^3, quite similar to the current Shanghai smog, and lower than levels regularly reported in other Chinese cities.
The current PM2.5 for Beijing, at http://aqicn.org/city/beijing/ , is 162 - "unhealthy".