Pakistan Smog

Children ride swings in a playground surrounded by smog in Lahore, Pakistan, Saturday, Nov. 11, 2017. Smog has enveloped much of Pakistan, causing highway accidents and respiratory problems, and forcing many residents to stay home, officials said. (AP Photo/K.M. Chaudary)

Children ride swings in a playground surrounded by smog in Lahore, Pakistan, Saturday, Nov. 11, 2017. Smog has enveloped much of Pakistan, causing highway accidents and respiratory problems, and forcing many residents to stay home, officials said. (AP Photo/K.M. Chaudary)

Source: AP