Imágenes de la contaminación atmosférica en Pakistán

A Pakistani man rides on a horse cart on a street amid heavy smog in Lahore on November 9, 2017. Flights were cancelled, school times pushed back and hospitals flooded as air pollution inundated Pakistan's second largest city Lahore November 8. The fast-developing country suffers from some of the worst air pollution in the world, thanks to its giant population navigating poorly maintained vehicles on its roads and unchecked industrial emissions along with seasonal crop burning. / AFP PHOTO / ARIF ALI

Pakistani children walk to school amid heavy smog in Lahore on November 9, 2017. Flights were cancelled, school times pushed back and hospitals flooded as air pollution inundated Pakistan's second largest city Lahore November 8. The fast-developing country suffers from some of the worst air pollution in the world, thanks to its giant population navigating poorly maintained vehicles on its roads and unchecked industrial emissions along with seasonal crop burning. / AFP PHOTO / ARIF ALI

A Pakistani vendor rides on his bicycle on a street amid heavy smog in Lahore on November 9, 2017. Flights were cancelled, school times pushed back and hospitals flooded as air pollution inundated Pakistan's second largest city Lahore November 8. The fast-developing country suffers from some of the worst air pollution in the world, thanks to its giant population navigating poorly maintained vehicles on its roads and unchecked industrial emissions along with seasonal crop burning. / AFP PHOTO / ARIF ALI

(FILES) This file photo taken on November 9, 2017 shows a Pakistani vendor carrying balloons on a street amid heavy smog in Lahore. The toxic smog that has covered parts of Pakistan for weeks has exposed official torpor against rampant pollution which has killed thousands more people in the fast-growing country than years of militancy. / AFP PHOTO / ARIF ALI

(FILES) This file photo taken on November 6, 2017 shows Pakistani children walking to school in heavy smog in Lahore. The toxic smog that has covered parts of Pakistan for weeks has exposed official torpor against rampant pollution which has killed thousands more people in the fast-growing country than years of militancy. / AFP PHOTO / ARIF ALI

A Pakistani woman and child carry eggs on a street amid heavy smog in Lahore on November 12, 2017. Large swathes of Pakistan and north India see a spike in pollution at the onset of winter due to crop burning and the fact that cooler air traps particulates close to the ground, preventing them from dispersing -- a phenomenon known as inversion. / AFP PHOTO / ARIF ALI

This picture taken on November 10, 2017 shows Pakistani tourists watch the view at the Margala Hill point amid heavy smog in Islamabad. / AFP PHOTO / AAMIR QURESHI

Pakistani youths play cricket amid heavy smog in Lahore on November 12, 2017. Large swathes of Pakistan and north India see a spike in pollution at the onset of winter due to crop burning and the fact that cooler air traps particulates close to the ground, preventing them from dispersing -- a phenomenon known as inversion. / AFP PHOTO / ARIF ALI