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View of smog in  Mexico City on July 2, 2016. 
Authorities announced recently new measures to combat an increase in air pollution in Mexico City, as officials reported an increase in related ailments such as asthma. Ozone levels surged in March, prompting authorities to declare the first air pollution alert in more than a decade. / AFP / HECTOR GUERRERO        (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
View of smog in  Mexico City on July 2, 2016. 
Authorities announced recently new measures to combat an increase in air pollution in Mexico City, as officials reported an increase in related ailments such as asthma. Ozone levels surged in March, prompting authorities to declare the first air pollution alert in more than a decade. / AFP / HECTOR GUERRERO        (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)

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    La polución se apodera de la Ciudad de México

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La polución se apodera de la Ciudad de México

Este viernes las autoridades decretaron restricciones vehiculares en la Ciudad de México para controlar los altos índices de contaminación del aire.

La polución se apodera de la Ciudad de México

Este viernes las autoridades decretaron restricciones vehiculares en la Ciudad de México para controlar los altos índices de contaminación del aire.