Number: 329 Mexican Air Pollution <desc> Description: Mexico City has the worst air pollution in the world. Pertinent Documents would contain the specific steps Mexican authorities have taken to combat this deplorable situation. <narr> Narrative: Relevant documents would discuss the steps the Mexican Government has taken to alleviate the air pollution in Mexico City. Steps such as reducing the number of automobiles in the city, encouraging the use of mass public transportation, and creating new mass transportation systems are relevant, among others. Mention of any new methods in the design stage would also be appropriate.