New York is choking on smog. But for these cities, it’s just another day

For days, images of New York choking in smoke have stunned the United States, as residents struggle to deal with the unfamiliar challenge of severe air pollution.

​CNN.com – RSS Channel For days, images of New York choking in smoke have stunned the United States, as residents struggle to deal with the unfamiliar challenge of severe air pollution. 

​Read More For days, images of New York choking in smoke have stunned the United States, as residents struggle to deal with the unfamiliar challenge of severe air pollution.