The Arctic ocean photographed in the same place, 107 years ago vs today.
The Arctic ocean photographed in the same place, 107 years ago vs today.
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air is probably cleaner now than it was then
Elaborate?
go read a historybook on the industrial revolution
That would make the air.. less clean now?
Edit: looks like PM2.5 and PM10 levels were 10-100x more around a hundred years ago. Seems like air quality is in fact better now.
119 comments