A small-particle haze hangs above the skyline in Paris, France, December 9, 2016 as the City of Light experienced the worst air pollution in a decade. At L, the Notre Dame Cathedral. REUTERS/Gonzalo ... more 
A small-particle haze hangs above the skyline in Paris, France, December 9, 2016 as the City of Light experienced the worst air pollution in a decade. At L, the Notre Dame Cathedral. REUTERS/Gonzalo Fuentes less 
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Reuters | Photo By GONZALO FUENTES / REUTERS
Fri, Dec 9, 2016 4:46 AM EST