A boy stands next to a ger, a traditional Mongolian tent, in an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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A boy walks at an area known as a ger district, where some residents live in traditional Mongolian tents, in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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Gers, traditional Mongolian tents, stand next to houses in an area known as a ger district in Ulan Bator June 26, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 26, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT) ATTENTION EDITORS: PICTURE 02 OF 17 FOR PACKAGE 'THE GER DISTRICTS OF ULAN BATOR'. TO FIND ALL IMAGES SEARCH 'GER ULAN BATOR' 

A boy walks along a street next to a ger, a traditional Mongolian tent, in an area known as a ger district in Ulan Bator June 26, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 26, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT TPX IMAGES OF THE DAY)

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Children play near gers, traditional Mongolian tents, in an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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A child plays near gers, traditional Mongolian tents, in an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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A crack is seen in the wall of a ger, a traditional Mongolian tent, at an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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Baljirjantsan Otgonseren, 32, stands inside her family ger, a traditional Mongolian tent, in an area known as a ger district in Ulan Bator June 26, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 26, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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Baljirjantsan Otgonseren, 32, stands outside her family ger, a traditional Mongolian tent, in an area known as a ger district in Ulan Bator June 26, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 26, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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An area known as a ger district is seen in Ulan Bator June 28, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 28, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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Gers, traditional Mongolian tents, are seen on a hill in an area known as a ger district in Ulan Bator June 28, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 28, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

ATTENTION EDITORS: PICTURE 11 OF 17 FOR PACKAGE 'THE GER DISTRICTS OF ULAN BATOR'. TO FIND ALL IMAGES SEARCH 'GER ULAN BATOR' 

Gers, traditional Mongolian tents, are seen on a hill in an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

ATTENTION EDITORS: PICTURE 13 OF 17 FOR PACKAGE 'THE GER DISTRICTS OF ULAN BATOR'. TO FIND ALL IMAGES SEARCH 'GER ULAN BATOR' 

Gers, traditional Mongolian tents, are seen on a hill in an area known as a ger district in Ulan Bator June 26, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 26, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

ATTENTION EDITORS: PICTURE 12 OF 17 FOR PACKAGE 'THE GER DISTRICTS OF ULAN BATOR'. TO FIND ALL IMAGES SEARCH 'GER ULAN BATOR' 

A child stands next to a ger, a traditional Mongolian tent, in an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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A ger, a traditional Mongolian tent, stands near a busy street in downtown Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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Gers, traditional Mongolian tents, are seen in an area known as a ger district in Ulan Bator June 22, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

ATTENTION EDITORS: PICTURE 16 OF 17 FOR PACKAGE 'THE GER DISTRICTS OF ULAN BATOR'. TO FIND ALL IMAGES SEARCH 'GER ULAN BATOR' 

A child stands next to a ger, a traditional Mongolian tent, in an area known as a ger district in Ulan Bator June 26, 2013. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger districts in the city have been expanding rapidly in recent years. Mongolia is the world's least densely populated country, with 2.8 million people spread across an area around three times the size of France. Picture taken June 26, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS ENVIRONMENT)

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