Smog w Mongolii - Redux

A miner ducks into a ger, or yurt, at the Nalaikh mines on the outskirts of Ulan Bator, Mongolia, Feb. 22, 2018. The air is cleaner in Nalaikh, despit...

A resident on a smoke-filled street in Dari Ekh, one of the so-called ger districts, in Ulan Bator, Mongolia, Feb. 22, 2018. According to government...

A resident walks through the smoke during the early morning in Ulaanbaatar, Mongolia, Feb. 22, 2018. According to government figures, around 80 percen...

Coal smoke rises from chimneys in the Bayankhoshuu district of Ulaanbaatar, Mongolia, Feb. 22, 2018. According to government figures, around 80 percen...

Workers sort coal at the Nalaikh mines on the outskirts of Ulaanbaatar, Mongolia, Feb. 22, 2018. The air is cleaner in Nalaikh, despite the area being...

Miners sort coal at the Nalaikh coal mine on the outskirts of Ulaanbaatar, Mongolia, Feb. 22, 2018. The air is cleaner in Nalaikh, despite the area be...

A coal seller delivers to a woman's home in a so-called ger district of Ulaanbaatar, Mongolia, Feb. 22, 2018. According to government figures, around...

Abandoned open pits of the former Soviet-operated coal mine at Nalaikh on the outskirts of Ulaanbaatar, Mongolia, Feb. 22, 2018. The air is cleaner in...

Miners emerge from a shaft at the Nalaikh coal mine on the outskirts of Ulaanbaatar, Mongolia, Feb. 22, 2018. The air is cleaner in Nalaikh, despite t...

The smoky hillsides of Dari Ekh, an unplanned ger district in Ulaanbaatar, Mongolia, Feb. 22, 2018. According to government figures, around 80 percent...

A pile of coal exposed in the snow on an abandoned lot in Ulaanbaatar, Mongolia, Feb. 22, 2018. According to government figures, around 80 percent of...

On a day of heavy pollution, residents walk through one of the so-called ger districts, named for a traditional nomadic dwelling, in Ulan Bator, Mongo...

On a day of heavy pollution, a resident walks through the Bayankhoshuu District of northern Ulaanbaatar, Mongolia, Feb. 21, 2018. According to governm...

Temuulen Ganzorig, 5, prepares to inhale medication through a nebulizer as part of his treatment for the flu at the Batchingun clinic, in Ulaanbaatar,...

The rising skyline, framed by a Soviet-era monument to the modern Mongolian state's founding, in Ulaanbaatar, Mongolia, Feb. 21, 2018. The burning of...

Sellers negotiate the price of raw coal with potential customers in a car at the Shar Khad market in Ulan Bator, Mongolia, Feb. 20, 2018. The burning...

Orlom Namjildorj uses a coal stove to make Mongolian milk tea for her husband, Byambatseren Usukhbayar, in the family's ger, or yurt, in Ulan Bator, M...

Men from western Mongolia hold a tryout for an archery competition on the frozen Tuul River, in Ulan Bator, Mongolia, Feb. 20, 2018. Winter temperatur...

Coal smoke rises from a school's boiler as two girls walk home after class on the outskirts of Ulan Bator, Mongolia, Feb. 19, 2018. The burning of raw...

A horse rests after training for traditional races on the outskirts of Ulaanbaatar, Mongolia, Feb. 19, 2018. Winter temperatures in Ulan Bator can fal...