air pollution started in mexico city in 1950s.
air pollution started in mexico city in 1950s.
when did air pollution start in mexico city?
1950s
air pollution in mexico city









































air pollution in mexico city is a continuing concern for citizens, health experts, and environmentalists. the air pollution of the mexico city metropolitan area, contained within the valley of mexico, is measured by the índice metropolitano de la calidad del aire" (metropolitan index of air quality).









































section::::history.









































it has been said that "mexico city’s air has gone from among the world’s cleanest to among the dirtiest in the span of a generation." historic air pollution episodes of the 1950s led to acute increases in infant mortality.
air pollution in mexico city
connections have been found between air pollution and school absenteeism among children in mexico city, between air pollution and heart rate variability among the elderly in mexico city, and between urban air pollutants on emergency visits for childhood asthma in mexico city.









































in efforts to reduce the pollution, in 1989 they introduced "no-drive days", or 'hoy no circula', which prohibited drivers using their vehicles on one weekday per week, and in 2008 this was changed to include saturdays. there is also large promotions for alternatives for driving, such as bus rapid transit lines and bike-sharing systems.









































section::::see also.
air pollution in mexico city