Smoke Smudges Mexico City's Air, Chemists Identify Sources
Monday, September 8, 2008 - 00:28
in Physics & Chemistry
Mexico City once topped lists of places with the worst air pollution in the world. Although efforts to curb emissions have improved the situation, tiny particles called aerosols still clog the air. Now, atmospheric scientists have sorted through the pall that hangs over the city to precisely identify aerosols that make up the haze and chart daily patterns of changes to the mix.