Since being declared as the world's most polluted city by a 1992 United Nations report, Mexico City has cleaned up its act when it comes to
air quality, it has been highlighted.
The Star reports that efforts to clean up the capital city's air have contributed to it being used as a positive example at a recent environmental forum held there among Latin American leaders.
Mario Molina, advisor to president-elect Barack Obama and winner of a Nobel Prize, commented: "There has been a large improvement and it's important to show what could be done."
However, he added that there is "still a long way to go to get satisfactory air" in Mexico's capital city.
Earlier this month, Mexico's environment minister Juan Rafael Elvira announced that, using 2002 levels as a guideline, the country aims to cut its carbon emissions by half before 2050.
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