The air we breathe en On Location Video, Mongolia: Cleaning up one of the world's most polluted cities <p>ULAN BATOR, Mongolia &mdash; In the fast-growing shantytowns surrounding Mongolia&#39;s capital, coal-burning stoves are the only source of heat during the country&#39;s frigid winters. The result is some of the world&#39;s dirtiest air. The World Bank estimates that air pollution is responsible for nearly a third of all deaths here, and costs the city an estimated $463 million each year. The government has vowed to clean up the air, but so far progress is slow.</p> Global Warming On Location The air we breathe Want to Know Asia-Pacific Fri, 08 Mar 2013 19:09:00 +0000 Pearly Jacob 5771099 at