Hazy Mexico City Takes On Cars, but Commuters Tell It to Look in the Mirror - The New York Times

Hazy Mexico City Takes On Cars, but Commuters Tell It to Look in the Mirror - The New York Times:



"MEXICO CITY — Back in the late 1980s, the air got so dirty in Mexico City that birds would emit a final chirp before they tumbled from the trees onto the sidewalk, their small, still bodies a sad testament to some of the world’s worst air pollution."



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