This city burns seventy thousand barrels of liquefied petroleum gas every day, causing pollution so bad that some scientists have suggested blasting through a nearby mountain to help remove it.
This city burns seventy thousand barrels of liquefied petroleum gas every day, causing pollution so bad that some scientists have suggested blasting through a nearby mountain to help remove it. However, this may be unnecessary: no smog alerts have been issued in sixteen months, and pollutant levels have decreased. Such changes were not made possible until 1997, when this city's first popularly elected government passed stiffer environmental regulations. _FOR 10 POINTS_ \--name this most populous North American city.
This city burns seventy thousand barrels of liquefied petroleum gas every day, causing pollution so bad that some scientists have suggested blasting through a nearby mountain to help remove it.
{Mexico City}