Top 9 Most Polluted Cities in the World
| May 22, 2015
Leah Kennedy / Shutterstock
Ulan Bator, Mongolia
As the coldest capital city in the world, the bulk of the pollution in Ulan Bator comes from coal-burning stoves. These stoves are traditional to many of the migratory people that live in Mongolia, and are still often used by the poorest of Ulan Bator’s citizens. As temperatures fall to below -40C in the winter, it’s no wonder that scientists are scrambling to find an alternative to these coal-burning stoves.
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