Smog Blog: World-Class Pollution Brings Tehran to a Halt

During the first weeks of 2013, Tehran was often blanketed in a stagnant, brown layer of smog so thick and obtrusive that it was difficult to make out the conspicuous mountain ranges that encircle the city. After trying to regulate the number of cars on the streets, a measure that failed to reduce the noxious haze, the capital city's government shut down its offices as well as banks, universities, and schools. [More]