Las Adjuntas lies at the end of the line, wedged into a narrow valley crammed with slum housing.

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The world is hurtling towards population overload, placing billions of people at risk of hunger, thirst, lack of energy and slum housing.

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New York's Tenement House Museum now refers to its historic building, tellingly, not as slum housing but as an "urban log cabin"--a starting point for upward mobility.

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The first cycle and building was in Colombo, Sri Lanka, where it has been adjudged the best slum housing scheme done in the country ever and the only one where people came voluntarily and still demand more.

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But the iShack's developers say that slum dwellers usually have to wait for years for power and water grids or low-cost housing to arrive.

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The transfer of power to Washington started with slum clearance during the Depression when the federal government began relocating the poor to more concentrated enclaves of public housing where they were denied ownership of the economy they once had built to support themselves however modestly.

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