the.com/smog

sky soup brewed by cities that forgot air was supposed to be invisible.

means A thick, polluted haze hanging over a city, formed when smoke or vehicle exhaust mixes with fog or stagnant air.

from A blend word — literally smoke + fog squashed together — coined in the early 20th century to name the choking murk that settled over industrial cities like London. It's a portmanteau in the same family as 'brunch,' two words fused because the thing they described was itself a fusion.

name origin
coined in 1905 by blending smoke and fog
deadly week
London's 1952 smog killed roughly 12,000 people
chemistry
sunlight cooks exhaust into ground-level ozone
visible from space
satellites map smog blooms over megacities
color cue
that brown haze is nitrogen dioxide showing off
for instance

great smog of london — killed ~12,000 people in december 1952

beijing air pollution — air quality index exceeded 1000 in january 2013

los angeles smog — photochemical smog peak in 1970s, now largely reduced

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